<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>MathManStudio.com</title><link>https://mathmanstudio.com/</link><description>Recent content on MathManStudio.com</description><generator>Hugo</generator><language>zh-TW</language><lastBuildDate>Sun, 19 Jul 2026 19:25:37 +0800</lastBuildDate><atom:link href="https://mathmanstudio.com/index.xml" rel="self" type="application/rss+xml"/><item><title>114高中數學學測A (多選17)(連三餘弦定理)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%ACa-%E5%A4%9A%E9%81%B817%E9%80%A3%E4%B8%89%E9%A4%98%E5%BC%A6%E5%AE%9A%E7%90%86/</link><pubDate>Sun, 19 Jul 2026 19:25:37 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%ACa-%E5%A4%9A%E9%81%B817%E9%80%A3%E4%B8%89%E9%A4%98%E5%BC%A6%E5%AE%9A%E7%90%86/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-19-%E4%B8%8B%E5%8D%884.18.28-1024x192.png"&gt;&lt;/p&gt;
&lt;p&gt;先畫個示意圖吧&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-19-%E4%B8%8B%E5%8D%884.38.48-1024x820.png"&gt;&lt;/p&gt;
&lt;p&gt;第一次餘弦，先利用題目已知求AB長&lt;/p&gt;
&lt;p&gt;$$
cos\angle{ABC}=\frac{9+9-\overline{AC}^2}{2\times3\times3}=\frac{-1}{8}
$$
$$
\overline{AC}=\frac{9}{2}
$$&lt;/p&gt;
&lt;p&gt;第二次餘弦&lt;/p&gt;
&lt;p&gt;$$
cos\phi=\frac{9+\frac{81}{4}-9}{2\times3\times\frac{9}{2}}=\frac{3}{4}
$$&lt;/p&gt;
&lt;p&gt;利用等弧對等圓周角&lt;/p&gt;
&lt;p&gt;$$
\angle{BAC}=\angle{BDC}=\phi
$$&lt;/p&gt;
&lt;p&gt;第三次餘弦&lt;/p&gt;
&lt;p&gt;$$
cos\phi=\frac{16+\overline{CD}^2-9}{2\times4\times\overline{CD}}=\frac{3}{4}
$$&lt;/p&gt;
&lt;p&gt;解得
&lt;details class="answer-box"&gt;
&lt;summary&gt;
&lt;span class="answer-show"&gt;查看答案&lt;/span&gt;
&lt;span class="answer-hide"&gt;收起答案&lt;/span&gt;
&lt;/summary&gt;
&lt;div class="answer-content"&gt;
$$
\overline{CD}=3\pm\sqrt{2}(取正)
$$
&lt;/div&gt;
&lt;/details&gt;&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選16)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B816/</link><pubDate>Sat, 18 Jul 2026 20:10:46 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B816/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-18-%E6%99%9A%E4%B8%8A7.56.14-1024x300.png"&gt;&lt;/p&gt;
&lt;p&gt;這題答對率只有18%，其實比前面有些題目都還簡單，可能是大家覺得寫到後面題目會越來越難，其實不見得哦！&lt;/p&gt;
&lt;p&gt;自己先畫個示意圖，觀察一下應該就是用點到直線的距離和畢氏定理即可求解&lt;/p&gt;
&lt;p&gt;$$
L1:mx-y=3m-1
$$
$$
d(O,L1)=\frac{|1-3m|}{\sqrt{m^2+1}}=1
$$&lt;/p&gt;
&lt;p&gt;拆掉絕對值後可解得&lt;/p&gt;
&lt;p&gt;$$
m=0,\frac{3}{4}(0不合)
$$&lt;/p&gt;
&lt;p&gt;在求原點到L2的距離&lt;/p&gt;
&lt;p&gt;$$
L2:mx+y=3m+1
$$
$$
d(O,L2)=\frac{|-1-3m|}{\sqrt{m^2+1}}=\frac{13}{5}
$$&lt;/p&gt;
&lt;p&gt;利用畢氏定理
&lt;details class="answer-box"&gt;
&lt;summary&gt;
&lt;span class="answer-show"&gt;查看答案&lt;/span&gt;
&lt;span class="answer-hide"&gt;收起答案&lt;/span&gt;
&lt;/summary&gt;
&lt;div class="answer-content"&gt;
$$
\overline{AB}=2\times\frac{12}{5}=\frac{24}{5}
$$
&lt;/div&gt;
&lt;/details&gt;&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選15)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B815/</link><pubDate>Fri, 17 Jul 2026 20:15:29 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B815/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-17-%E6%99%9A%E4%B8%8A7.38.33-1024x283.png"&gt;&lt;/p&gt;
&lt;p&gt;這題答對率只有16%，超低的啦！&lt;/p&gt;
&lt;p&gt;前3正的機率：&lt;/p&gt;
&lt;p&gt;$$
（\frac{1}{2})^3=\frac{1}{8}
$$&lt;/p&gt;
&lt;p&gt;第4次累積3個正面的機率：&lt;/p&gt;
&lt;p&gt;$$
(\frac{1}{2})^4\times\binom{3}{1}=\frac{3}{16}
$$&lt;/p&gt;
&lt;p&gt;第5次累積3個正面的機率：&lt;/p&gt;
&lt;p&gt;$$
(\frac{1}{2})^5\times\binom{4}{2}=\frac{3}{16}
$$&lt;/p&gt;
&lt;p&gt;5次仍未累積3正面的機率：&lt;/p&gt;
&lt;p&gt;$$
（\frac{1}{2})^5\times(\binom{5}{3}+\binom{5}{4}+\binom{5}{5})=\frac{1}{2}
$$&lt;/p&gt;
&lt;p&gt;期望值
&lt;details class="answer-box"&gt;
&lt;summary&gt;
&lt;span class="answer-show"&gt;查看答案&lt;/span&gt;
&lt;span class="answer-hide"&gt;收起答案&lt;/span&gt;
&lt;/summary&gt;
&lt;div class="answer-content"&gt;
$$
240\times\frac{1}{8}+320\times\frac{3}{16}+400\times\frac{3}{16}+480\times\frac{1}{2}=405
$$
&lt;/div&gt;
&lt;/details&gt;&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選14)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B814/</link><pubDate>Thu, 16 Jul 2026 19:41:53 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B814/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-16-%E6%99%9A%E4%B8%8A7.16.48-1024x231.png"&gt;&lt;/p&gt;
&lt;p&gt;利用點到平面距離公式可得&lt;/p&gt;
&lt;p&gt;$$
\frac{|4b+3c-2|}{\sqrt{4^2+3^2}}=6
$$&lt;/p&gt;
&lt;p&gt;絕對值內為負數，拆掉後可得&lt;/p&gt;
&lt;p&gt;$$
4b+3c=-28&amp;hellip;.(1)
$$
$$
\frac{|3b+4c+5|}{\sqrt{3^2+4^2}}=6
$$&lt;/p&gt;
&lt;p&gt;如果絕對值裡是正數可得&lt;/p&gt;
&lt;p&gt;$$
3b+4c+5=30(不合)
$$&lt;/p&gt;
&lt;p&gt;絕對值內應為負，可得&lt;/p&gt;
&lt;p&gt;$$
3b+4c=-35&amp;hellip;.(2)
$$&lt;/p&gt;
&lt;p&gt;最後看E3平面&lt;/p&gt;
&lt;p&gt;$$
\frac{|a+2b+2c+2|}{\sqrt{1^2+2^2+2^2}}=6
$$&lt;/p&gt;
&lt;p&gt;絕對值內應為負，可得&lt;/p&gt;
&lt;p&gt;$$
a+2b+2c=-20&amp;hellip;.(3)
$$&lt;/p&gt;
&lt;p&gt;綜合（1）（2）（3）可解出&lt;/p&gt;
&lt;p&gt;$$
a=-2\quad b=-1\quad c=-8
$$
$$
a+b+c=-11
$$&lt;/p&gt;
&lt;p&gt;Ans:-11&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選13)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B813/</link><pubDate>Wed, 15 Jul 2026 19:42:56 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B813/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-15-%E6%99%9A%E4%B8%8A7.30.00-1-1024x167.png"&gt;&lt;/p&gt;
&lt;p&gt;因為f(x)為三次多項式，可知q(x)為二次多項式，先把q(x)假設出來&lt;/p&gt;
&lt;p&gt;$$
q(x)=a(x+6)^2+8\quad(a&amp;lt;0)
$$
$$
又f(x)=(x+6)q(x)+3
$$
$$
f(x)=(x+6)[a(x+6)^2+8]+3
$$
$$
f(x)=a(x+6)^3+8(x+6)+3
$$
$$
對稱中心（-6,3)
$$&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選12)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B812/</link><pubDate>Tue, 14 Jul 2026 20:34:43 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B812/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-14-%E6%99%9A%E4%B8%8A7.34.51-1024x562.png"&gt;&lt;/p&gt;
&lt;p&gt;(1)合金拆成甲乙兩部分，加起來是100%。&lt;/p&gt;
&lt;p&gt;$$
x_k+u_k=100\quad (k=1,2&amp;hellip;20)
$$&lt;/p&gt;
&lt;p&gt;(2)奈米轉成微米要除以1000。&lt;/p&gt;
&lt;p&gt;$$
\frac{y_k}{1000}=v_k,\quad y_k=1000v_k\quad (k=1,2&amp;hellip;20)
$$&lt;/p&gt;
&lt;p&gt;(3)根據&lt;/p&gt;
&lt;p&gt;$$
u_k=-x_k+100
$$&lt;/p&gt;
&lt;p&gt;所以&lt;/p&gt;
&lt;p&gt;$$
\sigma_u=|-1|\times\sigma_x
$$
$$
\sigma_u=\sigma_x
$$&lt;/p&gt;
&lt;p&gt;(4)利用前式&lt;/p&gt;
&lt;p&gt;$$
x=100-u及y=1000v\quad代入迴歸式y=21.3x-40
$$&lt;/p&gt;
&lt;p&gt;解得&lt;/p&gt;
&lt;p&gt;$$
ｖ＝-0.0213u+2.09
$$
$$
a=-0.0213,b=2.09
$$&lt;/p&gt;
&lt;p&gt;（5）新加入的點在迴歸直線上，殘差平方和為0，迴歸直線不會改變。&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選11)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B811/</link><pubDate>Mon, 13 Jul 2026 20:35:58 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B811/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-13-%E6%99%9A%E4%B8%8A7.46.06-1024x397.png"&gt;&lt;/p&gt;
&lt;p&gt;（1）根據內分比性質可得&lt;/p&gt;
&lt;p&gt;$$
\overline{CP}:\overline{PD}=4:3
$$
$$
\Rightarrow\overline{CP}=\frac{4}{7}\overline{CD}
$$&lt;/p&gt;
&lt;p&gt;(2)利用向量加法性質轉換，做出線性組合。&lt;/p&gt;
&lt;p&gt;$$
\overrightarrow{AP}＝\overrightarrow{AC}+\overrightarrow{CP}=\overrightarrow{AC}+\frac{4}{7}\overrightarrow{CD}=\overrightarrow{AC}+\frac{4}{7}(\overrightarrow{CA}+\overrightarrow{AD})=\frac{3}{7}\overrightarrow{AC}+\frac{2}{7}\overrightarrow{AB}
$$&lt;/p&gt;
&lt;p&gt;(3)餘弦定理，送分啦！&lt;/p&gt;
&lt;p&gt;$$
cos\angle{BAC}=\frac{25+36-16}{2\times5\times6}=\frac{3}{4}
$$&lt;/p&gt;
&lt;p&gt;(4)三邊長都給你了，還有別的嗎？當然是海龍公式，送分啦！&lt;/p&gt;
&lt;p&gt;$$
\triangle{ABC}_a=\sqrt{\frac{15}{2}\times\frac{5}{2}\times\frac{3}{2}\times\frac{7}{2}}=\frac{15}{4}\sqrt{7}
$$
$$
\triangle{ACP}_a=\frac{15}{4}\sqrt{7}\times\frac{1}{2}\times\frac{4}{7}=\frac{15}{14}\sqrt{7}
$$&lt;/p&gt;
&lt;p&gt;(5)高中數學的多選題後面的選項，不要空想，常常會用到前面算出來的東西，前面做不出來後面就很難拿分！&lt;/p&gt;
&lt;p&gt;$$
\overrightarrow{AP}\cdot\overrightarrow{AC}=(\frac{3}{7}\overrightarrow{AC}+\frac{2}{7}\overrightarrow{AB})\cdot\overrightarrow{AC}=\frac{120}{7}
$$&lt;/p&gt;
&lt;p&gt;Ans:(3)(4)(5)&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選10)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B810/</link><pubDate>Sun, 12 Jul 2026 19:55:57 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B810/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-12-%E4%B8%8B%E5%8D%886.45.05-1024x366.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-12-%E4%B8%8B%E5%8D%886.55.33.png"&gt;&lt;/p&gt;
&lt;p&gt;（1）若k&amp;lt;0，無法滿足題目要求&lt;/p&gt;
&lt;p&gt;$$
x_1&amp;lt;x_2&amp;lt;1&amp;lt;x_3
$$&lt;/p&gt;
&lt;p&gt;(2)有4個交點&lt;/p&gt;
&lt;p&gt;（3）由圖形對稱性可得&lt;/p&gt;
&lt;p&gt;$$
x_1+x_2=1
$$&lt;/p&gt;
&lt;p&gt;(4)&lt;/p&gt;
&lt;p&gt;$$
2\overline{PQ}=2(x_2-x_1)=2(1-x_1-x_1)=2-4x_1
$$
$$
\overline{QR}=x_3-x_2=(2+x_1)-(1-x_1)=1+2x_1
$$
$$
解得x_1=\frac{1}{6}
$$
$$
驗算一下，sin\frac{1}{6}\pi=\frac{1}{2}，原式成立。
$$&lt;/p&gt;
&lt;p&gt;R點也可能在最右邊，此時&lt;/p&gt;
&lt;p&gt;$$
\overline{QR}=(x_3-x_2)=(3-x_1)-(1-x_1)=2
$$
$$
解得x=0，不合。
$$&lt;/p&gt;
&lt;p&gt;（5）&lt;/p&gt;
&lt;p&gt;$$
x_1+x_2+x_3+x_4=x_1+(1-x_1)+(2+x_1)+(3-x_1)=6
$$&lt;/p&gt;
&lt;p&gt;Ans:(1)(4)(5)&lt;/p&gt;</description></item><item><title>114高中數學學測數A(多選9)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B89/</link><pubDate>Sat, 04 Jul 2026 17:32:13 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%A4%9A%E9%81%B89/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-02-%E6%99%9A%E4%B8%8A8.40.44-1024x333.png"&gt;
$$
可得b^2-4c\ge0與(b+2)^2-4c&amp;lt;0
$$
$$
合併可得b^2\ge4c&amp;gt;(b+2)^2
$$&lt;/p&gt;
&lt;p&gt;(1)由&lt;/p&gt;
&lt;p&gt;$$
4c&amp;gt;(b+2)^2
$$&lt;/p&gt;
&lt;p&gt;可得&lt;/p&gt;
&lt;p&gt;$$
c&amp;gt;0
$$&lt;/p&gt;
&lt;p&gt;(2)整理一下&lt;/p&gt;
&lt;p&gt;$$
b^2&amp;gt;(b+2)^2
$$&lt;/p&gt;
&lt;p&gt;可得&lt;/p&gt;
&lt;p&gt;$$
b&amp;lt;-1
$$&lt;/p&gt;
&lt;p&gt;(3)整理&lt;/p&gt;
&lt;p&gt;$$
(b+1)^2-4c＝b^2-4c+2b+1其中(b^2-4c\ge0\quad b&amp;lt;-1)無法確定正負
$$&lt;/p&gt;
&lt;p&gt;可得&lt;/p&gt;
&lt;p&gt;(4)&lt;/p&gt;
&lt;p&gt;$$
(b+2)^2+4c&amp;gt;0
$$&lt;/p&gt;
&lt;p&gt;有兩相異實根。&lt;/p&gt;
&lt;p&gt;（5）&lt;/p&gt;
&lt;p&gt;$$
(b-2)^2-4c=b^2-4c-4b+4&amp;gt;0
$$&lt;/p&gt;
&lt;p&gt;有兩相異實根。&lt;/p&gt;
&lt;p&gt;正解：（2）（4）（5）&lt;/p&gt;</description></item><item><title>114高中數學學測數A (多選8)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a-%E5%A4%9A%E9%81%B88/</link><pubDate>Wed, 01 Jul 2026 20:36:41 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a-%E5%A4%9A%E9%81%B88/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/07/%E6%88%AA%E5%9C%96-2026-07-01-%E6%99%9A%E4%B8%8A7.33.00-1024x397.png"&gt;&lt;/p&gt;
&lt;p&gt;將原式配方整理後可得圓方程式如下：&lt;/p&gt;
&lt;p&gt;$$
（x-1）^2+y^2=4
$$&lt;/p&gt;
&lt;p&gt;此為圓心（1,0）半徑=2之圓方程式&lt;/p&gt;
&lt;p&gt;$$
(1)直線方程式x=3與此圓方程式之切線，交於1點，有兩相等實根。
$$&lt;/p&gt;
&lt;p&gt;（2）此圖形並未於原點有點對稱的現象。&lt;/p&gt;
&lt;p&gt;（3）正確。&lt;/p&gt;
&lt;p&gt;（4）解方程式判斷有無交點即可。&lt;/p&gt;
&lt;p&gt;$$
y=-x+4\quad代入（x-1）^2+y^2=4
$$
$$
整理後可得x^2-5x+\frac{13}{2}=0
$$
$$
判別式&amp;lt;0\rightarrow無交點
$$&lt;/p&gt;
&lt;p&gt;(5)求極值當然用柯西不等式啦！&lt;/p&gt;
&lt;p&gt;$$
令\vec{a}=(x-1,y)\quad\vec{b}=(1,-1)
$$
$$
[(x-1)^2+y^2]\times[1^2+(-1)^2]\ge（x-1-y）^2
$$
$$
1-2\sqrt{2}\le x-y\le1+2\sqrt{2}
$$&lt;/p&gt;
&lt;p&gt;正解：（3）（5）&lt;/p&gt;</description></item><item><title>無窮大有多大？</title><link>https://mathmanstudio.com/posts/%E7%84%A1%E7%AA%AE%E5%A4%A7%E6%9C%89%E5%A4%9A%E5%A4%A7/</link><pubDate>Sat, 20 Jun 2026 19:19:18 +0800</pubDate><guid>https://mathmanstudio.com/posts/%E7%84%A1%E7%AA%AE%E5%A4%A7%E6%9C%89%E5%A4%9A%E5%A4%A7/</guid><description>&lt;blockquote&gt;
&lt;p&gt;無窮大看起來只是個抽象概念，但它其實讓數學家發現了一件不可思議的事情:&lt;/p&gt;
&lt;p&gt;原來無窮大也有大小之分。&lt;/p&gt;
&lt;p&gt;有些無窮比另一些無窮還要大。&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;還記得高一數學學過的無理數嗎？圓周率𝛑≈3.1415926&amp;hellip;.. 無窮不循環小數&lt;/p&gt;
&lt;p&gt;或是超越數e≈2.71828&amp;hellip;..&lt;/p&gt;
&lt;p&gt;或是數線上任意兩個整數之間，比如說1和2，相加除以2得到1.5，再用1和1.5相加除以2又可以得到1.25，因此我們可以在1和2之間找出無窮個有理數&lt;/p&gt;
&lt;p&gt;無窮有很多個嗎?&lt;/p&gt;
&lt;p&gt;1和2之間存在無窮個有理數，2和3之間也是，或是隨便一個小數後面有無窮多位等等，一大堆的無窮，所以我們會遇到很多種『無窮』的情況。&lt;/p&gt;
&lt;p&gt;無窮有大小之分嗎?&lt;/p&gt;
&lt;p&gt;啊不是都無窮大了?那無窮大應該都一樣大吧!&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2026/06/image-758x1024.png"&gt;&lt;/p&gt;
&lt;p&gt;1874年，俄裔德國數學家(Georg Cantor)康托發表正式論文證明了無窮大也有大小之分。&lt;/p&gt;
&lt;p&gt;康托如何證明?&lt;/p&gt;
&lt;p&gt;1891年他用著名的對角線證明&lt;/p&gt;
&lt;p&gt;將所有的自然數對應所有的小數&lt;/p&gt;
&lt;p&gt;可以造出一個新的小數不在表上&lt;/p&gt;
&lt;p&gt;證實了自然數與實數無法一一對應&lt;/p&gt;
&lt;p&gt;比如說&lt;/p&gt;
&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;&lt;/th&gt;
&lt;th&gt;&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;0.423548&amp;hellip;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;0.589142&amp;hellip;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;3&lt;/td&gt;
&lt;td&gt;0.452572&amp;hellip;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;4&lt;/td&gt;
&lt;td&gt;0.958425&amp;hellip;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&amp;hellip;&amp;hellip;&amp;hellip;&amp;hellip;&lt;/td&gt;
&lt;td&gt;&amp;hellip;&amp;hellip;&amp;hellip;&amp;hellip;&amp;hellip;..&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;把對角線4824取出來每個數字+1得到5935後&lt;/p&gt;
&lt;p&gt;取0.5935&amp;hellip;&amp;hellip;..&lt;/p&gt;
&lt;p&gt;0.5935小數第一位和第一個數字不一樣&lt;/p&gt;
&lt;p&gt;0.5935小數第二位和第二個數字不一樣&lt;/p&gt;
&lt;p&gt;0.5935小數第三位和第三個數字不一樣&lt;/p&gt;
&lt;p&gt;0.5935小數第四位和第四個數字不一樣&lt;/p&gt;
&lt;p&gt;0.5935&amp;hellip;&amp;hellip;.這個數字在上面的無限排列表裡面找不到&lt;/p&gt;
&lt;p&gt;因此實數與自然數無法一一對應&lt;/p&gt;
&lt;p&gt;可以想像成有人說有無窮間旅館可以住&lt;/p&gt;
&lt;p&gt;但是康托都可以找到有人沒有房間住&lt;/p&gt;
&lt;p&gt;因此實數的集合是大於自然數的集合的&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;自然數也是無窮多個&lt;/p&gt;
&lt;p&gt;實數也是無窮多個&lt;/p&gt;
&lt;p&gt;但實數的無窮比自然數更大&lt;/p&gt;
&lt;p&gt;康托因此創立集合論&lt;/p&gt;
&lt;p&gt;從此數學家知道無窮其實有不同等級&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;什麼是googol(古戈爾)?（延伸閱讀）&lt;/p&gt;
&lt;p&gt;「古戈爾（Googol）」這個名字其實沒有什麼數學意義，而是&lt;strong&gt;一個小孩發明的名字&lt;/strong&gt;。&lt;/p&gt;
&lt;p&gt;1920年左右，美國數學家 Edward Kasner 想幫1010010^{100}(1後面有100個0)&lt;/p&gt;
&lt;p&gt;這個超大的數字取個名字。&lt;/p&gt;
&lt;p&gt;於是他問自己 9 歲的外甥 Milton Sirotta：&lt;/p&gt;
&lt;p&gt;「你覺得這麼大的數字應該叫什麼？」&lt;/p&gt;
&lt;p&gt;小朋友隨口回答：&lt;/p&gt;
&lt;p&gt;「Googol！」&lt;/p&gt;
&lt;p&gt;Kasner 覺得這名字很有趣，就採用了。&lt;/p&gt;
&lt;p&gt;後來創辦GOOGLE的工程師想讓搜尋引擎建立海量的資料，於是就採用Googol當作公司名稱，但是拼錯了，拼成Google，這也就是&amp;quot;Google&amp;quot;的由來!!&lt;/p&gt;
&lt;p&gt;Googolplex?&lt;/p&gt;
&lt;p&gt;$$
10^{10^{100}}
$$&lt;/p&gt;</description></item><item><title>114高中數學學測數A（單選6）(空間向量)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%96%AE%E9%81%B86/</link><pubDate>Sun, 28 Dec 2025 20:32:11 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%96%AE%E9%81%B86/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-27-%E6%99%9A%E4%B8%8A7.06.26-1024x774.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-28-%E6%99%9A%E4%B8%8A8.00.37-1024x167.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/12/%E5%96%AE%E9%81%B86-793x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;這題的解題關鍵在於向量內積的定義，就是最上面第三行長度的平方等於自己內積自己，用這個定義造出聯立方程組就可以求解啦～！&lt;/p&gt;</description></item><item><title>114高中數學學測數A（單選4~5）(對數函數與三角函數的圖形)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%96%AE%E9%81%B845%E5%B0%8D%E6%95%B8%E5%87%BD%E6%95%B8%E8%88%87%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B8%E7%9A%84/</link><pubDate>Sun, 26 Oct 2025 19:25:53 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%96%AE%E9%81%B845%E5%B0%8D%E6%95%B8%E5%87%BD%E6%95%B8%E8%88%87%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B8%E7%9A%84/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-26-%E4%B8%8B%E5%8D%883.33.08-1024x775.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-26-%E4%B8%8B%E5%8D%883.33.58-1024x204.png"&gt;&lt;/p&gt;
&lt;p&gt;先畫個圖吧&lt;/p&gt;
&lt;p&gt;利用底數大於1的對數函數圖形是&lt;strong&gt;嚴格遞增&lt;/strong&gt;的特性&lt;/p&gt;
&lt;p&gt;比如說Y座標為1的X座標就要從3數到30（因為(2,1)不能算）&lt;/p&gt;
&lt;p&gt;總共有&lt;/p&gt;
&lt;p&gt;(3,1)&amp;hellip;..(30,1)共28個&lt;/p&gt;
&lt;p&gt;(5,2)&amp;hellip;.(30,2)共26個&lt;/p&gt;
&lt;p&gt;(9,3)&amp;hellip;.(30,3)共22個&lt;/p&gt;
&lt;p&gt;(17,4)&amp;hellip;.(30,4)共14個&lt;/p&gt;
&lt;p&gt;一共90個&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Ans:(3)&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-26-%E4%B8%8B%E5%8D%883.55.29-1024x171.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-26-%E4%B8%8B%E5%8D%886.52.22-1024x439.png"&gt;&lt;/p&gt;
&lt;p&gt;$0&amp;lt;\theta&amp;lt;\cfrac{\pi}{3} \bigcup \pi&amp;lt;\theta&amp;lt;\cfrac{5\pi}{3}$&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-26-%E4%B8%8B%E5%8D%886.54.00-1024x432.png"&gt;&lt;/p&gt;
&lt;p&gt;$\cfrac{2\pi}{3}&amp;lt;\theta&amp;lt;\cfrac{4\pi}{3}$&lt;/p&gt;
&lt;p&gt;最後取兩圖形的交集&lt;/p&gt;
&lt;p&gt;$\pi&amp;lt;\theta&amp;lt;\cfrac{4\pi}{3}$&lt;/p&gt;
&lt;p&gt;$b-a=\cfrac{4}{3}-1=\cfrac{1}{3}$&lt;/p&gt;
&lt;p&gt;Ans:(1)&lt;/p&gt;
&lt;p&gt;🙀這題夭壽難，需要知道如何判斷函數的週期畫出圖形，還要找出圖形交點的X座標，最後記得三個範圍取交集啊！！！！&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;有沒有都學會啊～想問陳偉數學問題讓自己越來越厲害的話請立即加入&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://mathmanstudio.com/line-%E6%95%B8%E5%AD%B8%E8%A7%A3%E9%A1%8C%E5%AE%A4"&gt;LINE數學解題室&lt;/a&gt;&lt;/p&gt;</description></item><item><title>114高中數學學測數A（單選1~3）(獨立事件、直線方程式、排列組合)</title><link>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%96%AE%E9%81%B813%E7%8D%A8%E7%AB%8B%E4%BA%8B%E4%BB%B6%E7%9B%B4%E7%B7%9A%E6%96%B9%E7%A8%8B%E5%BC%8F/</link><pubDate>Sat, 25 Oct 2025 21:59:06 +0800</pubDate><guid>https://mathmanstudio.com/posts/114%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%AD%B8%E6%B8%AC%E6%95%B8a%E5%96%AE%E9%81%B813%E7%8D%A8%E7%AB%8B%E4%BA%8B%E4%BB%B6%E7%9B%B4%E7%B7%9A%E6%96%B9%E7%A8%8B%E5%BC%8F/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/06/%E6%88%AA%E5%9C%96-2025-06-01-%E6%99%9A%E4%B8%8A8.43.13-1024x774.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/06/%E6%88%AA%E5%9C%96-2025-06-01-%E6%99%9A%E4%B8%8A8.43.33-1024x586.png"&gt;&lt;/p&gt;
&lt;p&gt;$P(藍\cap1號)＝P(藍)\times P(1號)$&lt;/p&gt;
&lt;p&gt;$\cfrac{2}{9+k}=\cfrac{5}{9+k}\times \cfrac{6}{9+k}$&lt;/p&gt;
&lt;p&gt;解得k=6 or -9(取正)&lt;/p&gt;
&lt;p&gt;Ans:(5)&lt;/p&gt;
&lt;p&gt;😘&lt;strong&gt;兩獨立事件的交集定義！easy~&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-25-%E4%B8%8B%E5%8D%886.45.39-1024x233.png"&gt;&lt;/p&gt;
&lt;p&gt;先分別求出兩條直線的Y截點分別為&lt;/p&gt;
&lt;p&gt;（0,$\cfrac{3a}{2}$）與（0,$\cfrac{4a}{3}$）&lt;/p&gt;
&lt;p&gt;三角形面積等於&lt;/p&gt;
&lt;p&gt;$(\frac{3a}{2}-\frac{4a}{3})\times a \times \frac{1}{2}=3$&lt;/p&gt;
&lt;p&gt;解得a=6 or -6(取正)&lt;/p&gt;
&lt;p&gt;Ans:(2)&lt;/p&gt;
&lt;p&gt;🧒🏻&lt;strong&gt;Point:利用斜率與直線上一點即可寫出直線方程式～&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2025/10/%E6%88%AA%E5%9C%96-2025-10-25-%E6%99%9A%E4%B8%8A7.22.47-1024x368.png"&gt;&lt;/p&gt;
&lt;p&gt;利用加法原理來分類討論&lt;/p&gt;
&lt;p&gt;（1）討論歌唱排第三只有小鋼歌與鋼小歌兩種&lt;/p&gt;
&lt;p&gt;總共有：$2\times5!4!3!$&lt;/p&gt;
&lt;p&gt;(2)討論歌唱排第二只有鋼歌小與小歌鋼兩種&lt;/p&gt;
&lt;p&gt;總共有：$2\times5!4!3!$ （當然跟上面一樣）&lt;/p&gt;
&lt;p&gt;總計4種情形：就是$4\times5!4!3!$囉&lt;/p&gt;
&lt;p&gt;Ans:(4)&lt;/p&gt;
&lt;p&gt;😄&lt;strong&gt;單純的利用最原始的加法原理一一羅列即可得分！千萬別用取捨原理做啊～&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;有沒有都學會啊～想問陳偉數學問題讓自己越來越厲害的話請立即加入&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://mathmanstudio.com/line-%E6%95%B8%E5%AD%B8%E8%A7%A3%E9%A1%8C%E5%AE%A4"&gt;LINE數學解題室&lt;/a&gt;&lt;/p&gt;</description></item><item><title>113分科測驗高中數學甲詳解 -『 陳偉數學 』</title><link>https://mathmanstudio.com/posts/113%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E7%94%B2%E8%A9%B3%E8%A7%A3--%E9%99%B3%E5%81%89%E6%95%B8%E5%AD%B8-/</link><pubDate>Fri, 26 Jul 2024 16:28:48 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E7%94%B2%E8%A9%B3%E8%A7%A3--%E9%99%B3%E5%81%89%E6%95%B8%E5%AD%B8-/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/07/%E6%88%AA%E5%9C%96-2024-07-15-%E4%B8%8B%E5%8D%882.54.27-1024x320.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/07/%E6%88%AA%E5%9C%96-2024-07-15-%E4%B8%8B%E5%8D%883.03.04-989x1024.png"&gt;
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&lt;p&gt;&lt;strong&gt;要買參考書或各種好書請至全國品牌老字號南一書局唷!點此連結購買: &lt;a href="https://ibestfun.net/3DHP3"&gt;https://ibestfun.net/3DHP3&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 直線與圓(倒數30天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E7%9B%B4%E7%B7%9A%E8%88%87%E5%9C%93%E5%80%92%E6%95%B830%E5%A4%A9%E4%B8%8A%E6%88%B0%E5%A0%B4/</link><pubDate>Mon, 10 Jun 2024 21:37:37 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E7%9B%B4%E7%B7%9A%E8%88%87%E5%9C%93%E5%80%92%E6%95%B830%E5%A4%A9%E4%B8%8A%E6%88%B0%E5%A0%B4/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/06/7.-%E5%B9%B3%E9%9D%A2%E4%B8%8A%E6%9C%89%E4%B8%89%E9%AE%8EP-1-1-1024x162.jpg"&gt;
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&lt;p&gt;&lt;a href="https://youtu.be/CuP9VilZLyI"&gt;https://youtu.be/CuP9VilZLyI&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;影片詳解&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;要買參考書或各種好書請至全國品牌老字號南一書局唷!點此連結購買: &lt;a href="https://ibestfun.net/3DHP3"&gt;https://ibestfun.net/3DHP3&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 指數與對數函數(倒數34天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%8C%87%E6%95%B8%E8%88%87%E5%B0%8D%E6%95%B8%E5%87%BD%E6%95%B8%E5%80%92%E6%95%B834%E5%A4%A9/</link><pubDate>Thu, 06 Jun 2024 11:01:21 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%8C%87%E6%95%B8%E8%88%87%E5%B0%8D%E6%95%B8%E5%87%BD%E6%95%B8%E5%80%92%E6%95%B834%E5%A4%A9/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/06/%E6%AD%B7%E5%B1%86%E5%85%AC%E7%AB%8B%E9%AB%98%E4%B8%AD%E5%88%86%E7%A7%91%E6%B5%8B%E9%A9%97%E6%A8%A1%E6%93%AC%E8%A9%A6%E9%A1%8C%E8%A7%A3%E6%9E%90-1-1024x232.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/06/IGNL-1-984x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://youtu.be/EeKT5SIOkqc"&gt;https://youtu.be/EeKT5SIOkqc&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;影片詳解&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;要買參考書或各種好書請至全國品牌老字號南一書局唷!點此連結購買: &lt;a href="https://ibestfun.net/3DHP3"&gt;https://ibestfun.net/3DHP3&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 複數與多項方程式 (倒數42天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E8%A4%87%E6%95%B8%E8%88%87%E5%A4%9A%E9%A0%85%E6%96%B9%E7%A8%8B%E5%BC%8F-%E5%80%92%E6%95%B842/</link><pubDate>Wed, 29 May 2024 12:31:59 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E8%A4%87%E6%95%B8%E8%88%87%E5%A4%9A%E9%A0%85%E6%96%B9%E7%A8%8B%E5%BC%8F-%E5%80%92%E6%95%B842/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/%E8%AA%AA%E6%98%8E%EF%BC%9A%E7%AC%AC4.%E9%A1%8C%E8%87%B3%E7%AC%AC8%E9%A1%8C%EF%BC%8C%E6%AF%8F%E9%A1%8C8%E5%88%86%E3%80%82-1-1024x203.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/Untitled-Draft-1-5-1024x783.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://youtu.be/JJxx"&gt;https://youtu.be/JJxx&lt;/a&gt;_hEjr5E&lt;/p&gt;
&lt;p&gt;影片詳解&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;要買參考書或各種好書請至全國品牌老字號南一書局唷!點此連結購買: &lt;a href="https://ibestfun.net/3DHP3"&gt;https://ibestfun.net/3DHP3&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 極限與函數 (倒數44天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%A5%B5%E9%99%90%E8%88%87%E5%87%BD%E6%95%B8-%E5%80%92%E6%95%B844%E5%A4%A9%E4%B8%8A%E6%88%B0/</link><pubDate>Mon, 27 May 2024 19:43:36 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%A5%B5%E9%99%90%E8%88%87%E5%87%BD%E6%95%B8-%E5%80%92%E6%95%B844%E5%A4%A9%E4%B8%8A%E6%88%B0/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/%C3%97-1%EF%BC%8C%C3%97%E2%89%A50-1-1024x279.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/Untitled-Draft-1-4-973x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/Untitled-Draft-2-1024x508.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://youtu.be/eEuD"&gt;https://youtu.be/eEuD&lt;/a&gt;_vlSBaE&lt;/p&gt;
&lt;p&gt;影片詳解&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;要買參考書或各種書局請至全國品牌老字號南一書局唷!點此連結購買: &lt;a href="https://ibestfun.net/3DHP3"&gt;https://ibestfun.net/3DHP3&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>113國中會考數學詳解</title><link>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%9C%83%E8%80%83%E6%95%B8%E5%AD%B8%E8%A9%B3%E8%A7%A3/</link><pubDate>Thu, 23 May 2024 17:12:41 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%9C%83%E8%80%83%E6%95%B8%E5%AD%B8%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/113P_Math-01-742x1024.jpg"&gt;
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&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/113P_Math-10-742x1024.jpg"&gt;
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&lt;p&gt;&lt;a href="https://youtu.be/AMWMGgOwHr4"&gt;https://youtu.be/AMWMGgOwHr4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;影片詳解&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 平面向量 (倒數58天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E5%B9%B3%E9%9D%A2%E5%90%91%E9%87%8F-%E5%80%92%E6%95%B858%E5%A4%A9%E4%B8%8A%E6%88%B0%E5%A0%B4/</link><pubDate>Mon, 13 May 2024 22:53:03 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E5%B9%B3%E9%9D%A2%E5%90%91%E9%87%8F-%E5%80%92%E6%95%B858%E5%A4%A9%E4%B8%8A%E6%88%B0%E5%A0%B4/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/35-1-1-1024x543.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/Al-30.-401-x-1-1-1024x944.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://youtu.be/BRea2dZwHLI"&gt;https://youtu.be/BRea2dZwHLI&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;影片詳解&lt;/strong&gt;&lt;/p&gt;</description></item><item><title>學校沒教的數學:超好用!沒有計算機的偷吃步!如何筆算平方根?</title><link>https://mathmanstudio.com/posts/%E5%AD%B8%E6%A0%A1%E6%B2%92%E6%95%99%E7%9A%84%E6%95%B8%E5%AD%B8%E8%B6%85%E5%A5%BD%E7%94%A8%E6%B2%92%E6%9C%89%E8%A8%88%E7%AE%97%E6%A9%9F%E7%9A%84%E5%81%B7%E5%90%83%E6%AD%A5%E5%A6%82%E4%BD%95/</link><pubDate>Thu, 09 May 2024 18:30:47 +0800</pubDate><guid>https://mathmanstudio.com/posts/%E5%AD%B8%E6%A0%A1%E6%B2%92%E6%95%99%E7%9A%84%E6%95%B8%E5%AD%B8%E8%B6%85%E5%A5%BD%E7%94%A8%E6%B2%92%E6%9C%89%E8%A8%88%E7%AE%97%E6%A9%9F%E7%9A%84%E5%81%B7%E5%90%83%E6%AD%A5%E5%A6%82%E4%BD%95/</guid><description>&lt;p&gt;今天就來學學，當學校數學考試無法使用計算機時(當然幾乎都不能用)，要如何通過&lt;strong&gt;筆算&lt;/strong&gt;來求得平方根，這可以幫助你在估計答案的時候無往不利哦!其實過程相當容易哦，只有一個模式!!&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;現在說明不用計算機，馬上就可以估計根號23的方法~&lt;/p&gt;
&lt;p&gt;首先在根號裡寫下23，接者以兩個0為一組，看需要估計到小數點下第幾位，一般來說小數點以下兩位就很夠用了，所以寫上4個0。&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/Untitled-Draft-1-1-1024x111.jpg"&gt;&lt;/p&gt;
&lt;p&gt;接著取根號23的整數部分，它是4點多&amp;hellip;.，所以取4，在23上方寫4，左方寫2個4。&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/Untitled-Draft-1-2-1024x220.jpg"&gt;&lt;/p&gt;
&lt;p&gt;接者，記得重要口訣：&lt;strong&gt;右乘左加&lt;/strong&gt;，右邊得到16，左邊得到8，再用23-16得到7，接著把旁邊的2個0掉下來&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/I-00-0-1-1024x318.jpg"&gt;&lt;/p&gt;
&lt;p&gt;這樣就產出根號23的第一個數字4了，接者在數字8的旁邊與下方各加上一個框框，這2個框框就是小數點後第一位數字，要填入乘起來最接近700的數字，於是填入7，再用右乘左加的原則得到700-609=71，87+7=94，右側2個0掉下來，如下&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/I-00-0-1-1-1-1024x493.jpg"&gt;&lt;/p&gt;
&lt;p&gt;繼續&lt;strong&gt;同樣的操作&lt;/strong&gt;，得到以下結果，4.79，大功告成！要求到幾位，就求到幾位！&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/I-00-0-1-2-1024x653.jpg"&gt;&lt;/p&gt;
&lt;p&gt;嘿嘿，上面的方法即使有小數點也適用哦，比如要估計23.21的平方根，就只用把00改成21就可以囉！任何數都可以用此方法找出平方根，當人家在用國中的十分逼近法找個半死的時候，你已捷足先登！&lt;/p&gt;
&lt;p&gt;&lt;a href="https://youtu.be/oxsBEt0km"&gt;https://youtu.be/oxsBEt0km&lt;/a&gt;_g&lt;/p&gt;
&lt;p&gt;影片講解&lt;/p&gt;</description></item><item><title>113國中教育會考練功坊 三視圖 (倒數16天上戰場)</title><link>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E4%B8%89%E8%A6%96%E5%9C%96-%E5%80%92%E6%95%B816%E5%A4%A9%E4%B8%8A%E6%88%B0%E5%A0%B4/</link><pubDate>Thu, 02 May 2024 10:27:46 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E4%B8%89%E8%A6%96%E5%9C%96-%E5%80%92%E6%95%B816%E5%A4%A9%E4%B8%8A%E6%88%B0%E5%A0%B4/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/05/9%E2%91%A7C-O-1-1024x378.jpg"&gt;
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&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Red-Yellow-and-Blue-Modern-Educational-Life-of-a-Teacher-YouTube-Thumbnail-3-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>113國中教育會考練功坊 (數學科) 算圓柱表面積(倒數94天上戰場)</title><link>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%95%B8%E5%AD%B8%E7%A7%91-%E7%AE%97%E5%9C%93%E6%9F%B1%E8%A1%A8%E9%9D%A2%E7%A9%8D%E5%80%92%E6%95%B894%E5%A4%A9/</link><pubDate>Wed, 14 Feb 2024 18:42:40 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%95%B8%E5%AD%B8%E7%A7%91-%E7%AE%97%E5%9C%93%E6%9F%B1%E8%A1%A8%E9%9D%A2%E7%A9%8D%E5%80%92%E6%95%B894%E5%A4%A9/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/17.-%E5%A6%82%E5%8F%B3%E5%9C%96%EF%BC%8C%E6%9C%89%E4%B8%80%E5%80%8B%E5%BA%95%E9%9D%A2%E5%9C%93%E5%8D%8A%E5%BE%91%E7%82%BA2%E5%85%AC%E5%88%86%E3%80%81%E6%9F%B1%E9%AB%986%E5%85%AC%E5%88%86%E7%9A%84%E5%9C%86%E6%9F%B1%EF%BC%8C%E2%80%A6-1-1024x303.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Sol_-%E7%8E%A9x-2-4-%CF%80-6-2-%CF%80%C3%97-3-1-1024x443.jpg"&gt;&lt;/p&gt;
&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/3xUQlVthjcg"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Purple-Pixel-Live-Stream-YouTube-Thumbnail-3-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 (極限與函數 微分)(倒數150天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%A5%B5%E9%99%90%E8%88%87%E5%87%BD%E6%95%B8-%E5%BE%AE%E5%88%86%E5%80%92%E6%95%B8150%E5%A4%A9/</link><pubDate>Tue, 13 Feb 2024 11:03:40 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%A5%B5%E9%99%90%E8%88%87%E5%87%BD%E6%95%B8-%E5%BE%AE%E5%88%86%E5%80%92%E6%95%B8150%E5%A4%A9/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/5-1-1024x300.jpg"&gt;
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&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/n7iIJ3scpTU"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Red-Yellow-and-Blue-Modern-Educational-Life-of-a-Teacher-YouTube-Thumbnail-2-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>113國中教育會考練功坊 (數學科) 重心線段問題(倒數97天上戰場)</title><link>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%95%B8%E5%AD%B8%E7%A7%91-%E9%87%8D%E5%BF%83%E7%B7%9A%E6%AE%B5%E5%95%8F%E9%A1%8C%E5%80%92%E6%95%B897%E5%A4%A9/</link><pubDate>Sun, 11 Feb 2024 11:51:56 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E6%95%B8%E5%AD%B8%E7%A7%91-%E9%87%8D%E5%BF%83%E7%B7%9A%E6%AE%B5%E5%95%8F%E9%A1%8C%E5%80%92%E6%95%B897%E5%A4%A9/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/16-1-1-1024x329.jpg"&gt;
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&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/4WhO5F1lq5E"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Purple-Pixel-Live-Stream-YouTube-Thumbnail-2-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 (多項式函數 極限 微分)(倒數153天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E5%A4%9A%E9%A0%85%E5%BC%8F%E5%87%BD%E6%95%B8-%E6%A5%B5%E9%99%90-%E5%BE%AE%E5%88%86%E5%80%92/</link><pubDate>Sat, 10 Feb 2024 10:29:29 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E5%A4%9A%E9%A0%85%E5%BC%8F%E5%87%BD%E6%95%B8-%E6%A5%B5%E9%99%90-%E5%BE%AE%E5%88%86%E5%80%92/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/4-1-1024x238.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Sol_-%E4%BB%A4f-x-ax-b-x-1-x-3-2-793x1024.jpg"&gt;&lt;/p&gt;
&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/fP7iyajIzgg"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Red-Yellow-and-Blue-Modern-Educational-Life-of-a-Teacher-YouTube-Thumbnail-1-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>會考數學 113國中教育會考練功坊 (票價問題)</title><link>https://mathmanstudio.com/posts/%E6%9C%83%E8%80%83%E6%95%B8%E5%AD%B8-113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E7%A5%A8%E5%83%B9%E5%95%8F%E9%A1%8C/</link><pubDate>Fri, 09 Feb 2024 11:29:27 +0800</pubDate><guid>https://mathmanstudio.com/posts/%E6%9C%83%E8%80%83%E6%95%B8%E5%AD%B8-113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E7%A5%A8%E5%83%B9%E5%95%8F%E9%A1%8C/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/15-1-1024x509.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Sol_-%E8%A8%AD%E5%85%B1%E6%9C%89-%CE%BB-%E4%BA%BA%E5%8F%83%E5%8A%A0-%E3%80%81%E5%89%87-1-1024x763.jpg"&gt;&lt;/p&gt;
&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/hnsRT-Z5Pag"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Purple-Pixel-Live-Stream-YouTube-Thumbnail-1-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>113高中數學分科測驗練功坊 (平面向量 共線定理)(倒數155天上戰場)</title><link>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E5%B9%B3%E9%9D%A2%E5%90%91%E9%87%8F-%E5%85%B1%E7%B7%9A%E5%AE%9A%E7%90%86%E5%80%92%E6%95%B8155/</link><pubDate>Thu, 08 Feb 2024 13:14:08 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E7%B7%B4%E5%8A%9F%E5%9D%8A-%E5%B9%B3%E9%9D%A2%E5%90%91%E9%87%8F-%E5%85%B1%E7%B7%9A%E5%AE%9A%E7%90%86%E5%80%92%E6%95%B8155/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/3-1-1024x272.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/A-1-793x1024.jpg"&gt;&lt;/p&gt;
&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/Yu7SQoFg67w"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Red-Yellow-and-Blue-Modern-Educational-Life-of-a-Teacher-YouTube-Thumbnail-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>會考數學 113國中教育會考練功系列 (不規則圖形算面積)</title><link>https://mathmanstudio.com/posts/%E6%9C%83%E8%80%83%E6%95%B8%E5%AD%B8-113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E7%B3%BB%E5%88%97-%E4%B8%8D%E8%A6%8F%E5%89%87%E5%9C%96%E5%BD%A2%E7%AE%97%E9%9D%A2/</link><pubDate>Mon, 05 Feb 2024 11:57:04 +0800</pubDate><guid>https://mathmanstudio.com/posts/%E6%9C%83%E8%80%83%E6%95%B8%E5%AD%B8-113%E5%9C%8B%E4%B8%AD%E6%95%99%E8%82%B2%E6%9C%83%E8%80%83%E7%B7%B4%E5%8A%9F%E7%B3%BB%E5%88%97-%E4%B8%8D%E8%A6%8F%E5%89%87%E5%9C%96%E5%BD%A2%E7%AE%97%E9%9D%A2/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/13-1-1024x273.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Untitled-Draft-1-1024x411.jpg"&gt;&lt;/p&gt;
&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/hnsRT-Z5Pag"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/02/Purple-Pixel-Live-Stream-YouTube-Thumbnail-1024x576.png"&gt;&lt;/p&gt;</description></item><item><title>113學測數A詳解</title><link>https://mathmanstudio.com/posts/113%E5%AD%B8%E6%B8%AC%E6%95%B8a%E8%A9%B3%E8%A7%A3/</link><pubDate>Tue, 30 Jan 2024 20:42:13 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%AD%B8%E6%B8%AC%E6%95%B8a%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;a href="https://mathmanstudio.com/wp-content/uploads/2024/01/03-113%E5%AD%B8%E6%B8%AC%E6%95%B8A%E8%A9%A6%E9%A1%8C-1.pdf"&gt;03-113學測數A試題-1&lt;/a&gt;&lt;a href="https://mathmanstudio.com/wp-content/uploads/2024/01/03-113%E5%AD%B8%E6%B8%AC%E6%95%B8A%E8%A9%A6%E9%A1%8C-1.pdf"&gt;下載&lt;/a&gt;&lt;/p&gt;
&lt;h2 id="單選1"&gt;單選1&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B81-1024x548.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選2"&gt;單選2&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B82-1-793x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-1"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選3"&gt;單選3&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B83-1-1024x692.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-2"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選4"&gt;單選4&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B84-1-847x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-3"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選5"&gt;單選5&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B85-1-1024x501.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-4"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選6"&gt;單選6&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B86-1-1024x920.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-5"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選7"&gt;多選7&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B87-917x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B872-793x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-6"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選8"&gt;多選8&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B88-1-871x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B882-1-880x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B883-1024x277.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-7"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選9"&gt;多選9&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B89-1-925x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B892-1-864x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-8"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選10"&gt;多選10&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B810-1-902x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-9"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選11"&gt;多選11&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B811-1-947x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B8112-1-822x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-10"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選12"&gt;多選12&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B812-1-917x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B8122-1-1024x726.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-11"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填13"&gt;選填13&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB13-1-1024x656.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-12"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填14"&gt;選填14&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB14-1-876x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-13"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填15"&gt;選填15&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB15-1-1024x799.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-14"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填16"&gt;選填16&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB16-1-856x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-15"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填17"&gt;選填17&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB17-1-833x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB172-1024x597.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-16"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選18"&gt;單選18&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B818-870x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-17"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="非選19"&gt;非選19&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%9D%9E%E9%81%B819-892x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-18"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="非選20"&gt;非選20&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%9D%9E%E9%81%B820-869x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%9D%9E%E9%81%B8202-1024x476.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-19"&gt;&lt;a href="https://youtu.be/VNh5XxlSmRA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;</description></item><item><title>113學測數B詳解</title><link>https://mathmanstudio.com/posts/113%E5%AD%B8%E6%B8%AC%E6%95%B8b-%E8%A9%B3%E8%A7%A3/</link><pubDate>Tue, 30 Jan 2024 16:12:49 +0800</pubDate><guid>https://mathmanstudio.com/posts/113%E5%AD%B8%E6%B8%AC%E6%95%B8b-%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;a href="https://mathmanstudio.com/wp-content/uploads/2024/01/03-113%E5%AD%B8%E6%B8%AC%E6%95%B8A%E8%A9%A6%E9%A1%8C.pdf"&gt;03-113學測數A試題&lt;/a&gt;&lt;a href="https://mathmanstudio.com/wp-content/uploads/2024/01/03-113%E5%AD%B8%E6%B8%AC%E6%95%B8A%E8%A9%A6%E9%A1%8C.pdf"&gt;下載&lt;/a&gt;&lt;/p&gt;
&lt;h2 id="單選1"&gt;單選1&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/113%E5%AD%B8%E6%B8%AC%E6%95%B8B-%E8%A9%B3%E8%A7%A3-02-1-1024x747.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡"&gt;&lt;a href="https://youtu.be/QWC5DK-yrR0"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選2"&gt;單選2&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B82-1024x960.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-1"&gt;&lt;a href="https://youtu.be/iEEHAckMvGg"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選3"&gt;單選3&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B83-882x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-2"&gt;&lt;a href="https://youtu.be/D0X5XzKBOdI"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選4"&gt;單選4&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B84-880x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-3"&gt;&lt;a href="https://youtu.be/r9cOgOuLlRE"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選5"&gt;單選5&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B85-938x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-4"&gt;&lt;a href="https://youtu.be/URW_sgAiBUU"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="單選6"&gt;單選6&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B86-1024x965.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-5"&gt;&lt;a href="https://youtu.be/ci-UeCt7ie4"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選7"&gt;多選7&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%96%AE%E9%81%B87-1024x508.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-6"&gt;&lt;a href="https://youtu.be/L0MMZgrMKxA"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選8"&gt;多選8&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B88-926x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B882-974x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-7"&gt;&lt;a href="https://youtu.be/oABVUaOnkYs"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選9"&gt;多選9&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B89-937x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B892-1024x512.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-8"&gt;&lt;a href="https://youtu.be/QkfkCFGbqWg"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選10"&gt;多選10&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B810-1024x1004.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B8102-925x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-9"&gt;&lt;a href="https://youtu.be/xOJvc0Ua8AI"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選11"&gt;多選11&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B811-1024x1004.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B8112-1024x864.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-10"&gt;&lt;a href="https://youtu.be/1D0Motn1EGE"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="多選12"&gt;多選12&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B812-878x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E5%A4%9A%E9%81%B8122-841x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-11"&gt;&lt;a href="https://youtu.be/YPh9XZY2p9Q"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填13"&gt;選填13&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB13-1024x657.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-12"&gt;&lt;a href="https://youtu.be/cps4qqPFrsk"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填14"&gt;選填14&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB14-929x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-13"&gt;&lt;a href="https://youtu.be/ONrbpM6QRmI"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填15"&gt;選填15&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB15-1024x867.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-14"&gt;&lt;a href="https://youtu.be/la53VolPvdE"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填16"&gt;選填16&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB16-793x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-15"&gt;&lt;a href="https://youtu.be/IyrR3sgNZSE"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填17"&gt;選填17&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB17-879x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-16"&gt;&lt;a href="https://youtu.be/iTOMYIHOv8k"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="題組18"&gt;題組18&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB18-1024x542.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-17"&gt;&lt;a href="https://youtu.be/Qtcf4P4IvBs"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填19"&gt;選填19&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB19-1024x832.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-18"&gt;&lt;a href="https://youtu.be/D1BHYX9tE6o"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;
&lt;h2 id="選填20"&gt;選填20&lt;/h2&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E9%81%B8%E5%A1%AB20-922x1024.jpg"&gt;&lt;/p&gt;
&lt;h3 id="影音詳解點這裡-19"&gt;&lt;a href="https://youtu.be/NA82ZXIbDrY"&gt;影音詳解點這裡&lt;/a&gt;&lt;/h3&gt;</description></item><item><title>學測數A 113高中數學練功系列 (空間中點與直線的關係)</title><link>https://mathmanstudio.com/posts/%E5%AD%B8%E6%B8%AC%E6%95%B8a-113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E7%B7%B4%E5%8A%9F%E7%B3%BB%E5%88%97-%E7%A9%BA%E9%96%93%E4%B8%AD%E9%BB%9E%E8%88%87%E7%9B%B4%E7%B7%9A%E7%9A%84%E9%97%9C%E4%BF%82/</link><pubDate>Sat, 20 Jan 2024 11:41:42 +0800</pubDate><guid>https://mathmanstudio.com/posts/%E5%AD%B8%E6%B8%AC%E6%95%B8a-113%E9%AB%98%E4%B8%AD%E6%95%B8%E5%AD%B8%E7%B7%B4%E5%8A%9F%E7%B3%BB%E5%88%97-%E7%A9%BA%E9%96%93%E4%B8%AD%E9%BB%9E%E8%88%87%E7%9B%B4%E7%B7%9A%E7%9A%84%E9%97%9C%E4%BF%82/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/%E7%A9%BA%E9%96%93%E4%B8%AD%E9%BB%9E%E8%88%87%E7%9B%B4%E7%B7%9A%E7%9A%84%E9%97%9C%E4%BF%82-1-1024x232.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/Sol_-.-A-1.-7.-2-1-902x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2024/01/Sol_-.-A-1.-7.-2-2-1024x522.jpg"&gt;&lt;/p&gt;
&lt;h2 id="utube影片解說"&gt;&lt;a href="https://youtu.be/6gh1rYXJt_o"&gt;★&lt;strong&gt;yo&lt;/strong&gt;&lt;/a&gt;&lt;a href="https://youtu.be/XKz0qpANods"&gt;&lt;strong&gt;utube影片解說&lt;/strong&gt;★歡迎訂閱按讚謝謝!&lt;/a&gt;&lt;/h2&gt;
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&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;填充8 斜橢圓面積非現行高中數學面積&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/9-1.png"&gt;&lt;/p&gt;
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&lt;hr&gt;
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&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/1-1024x473.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高職數學 一元二次方程式 兩根積 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 乘法公式 難度:★&lt;/strong&gt;★&lt;/p&gt;
&lt;hr&gt;
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&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/3-1024x600.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高職數學 三角比 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/4-1024x171.png"&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 向量的內積 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 線性規劃 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 海龍公式 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 矩陣的乘法 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/8-1024x274.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 旋轉矩陣 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/9-1024x148.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 平面方程式 難度:★&lt;/strong&gt;★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/10-1024x275.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 聯立方程組 難度:&lt;/strong&gt;★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/11-1024x114.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 絕對值不等式 難度:★&lt;/strong&gt;★&lt;/p&gt;
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&lt;hr&gt;
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&lt;p&gt;高職數學 多項式虛根成雙定理 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/%E6%93%B7%E5%8F%96-1-1024x232.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 等比數列 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/14-1024x257.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 積分的意義 難度:★&lt;/strong&gt;★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/%E6%93%B7%E5%8F%96-3-1024x113.png"&gt;&lt;/p&gt;
&lt;hr&gt;
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&lt;p&gt;&lt;strong&gt;高職數學 函數的極限 難度:★&lt;/strong&gt;★&lt;/p&gt;</description></item><item><title>112國中會考 數學科 詳解</title><link>https://mathmanstudio.com/posts/112%E5%9C%8B%E4%B8%AD%E6%9C%83%E8%80%83-%E6%95%B8%E5%AD%B8%E7%A7%91-%E8%A9%B3%E8%A7%A3/</link><pubDate>Thu, 01 Jun 2023 13:36:33 +0800</pubDate><guid>https://mathmanstudio.com/posts/112%E5%9C%8B%E4%B8%AD%E6%9C%83%E8%80%83-%E6%95%B8%E5%AD%B8%E7%A7%91-%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/IMG_0161-793x1024.jpg"&gt;
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&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/06/IMG_0181-793x1024.jpg"&gt;&lt;/p&gt;</description></item><item><title>111學測試題數學B詳解</title><link>https://mathmanstudio.com/posts/111%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8b%E8%A9%B3%E8%A7%A3/</link><pubDate>Mon, 15 May 2023 19:38:01 +0800</pubDate><guid>https://mathmanstudio.com/posts/111%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8b%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/2574-1024x122.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0064-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 絕對值不等式 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/%E6%93%B7%E5%8F%96-1-1024x395.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0065-1024x922.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;國中數學 數列(找規律) 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/258-2-1024x207.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0066-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 排列組合 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/123.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0067-1024x748.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 平面向量 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/%E6%93%B7%E5%8F%96-2-1024x177.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0068-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 矩陣 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/234-1024x222.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0069-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 球 難度:★&lt;/strong&gt;★&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;題目稍微理解後&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;其實算法超簡單&lt;/strong&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/%E6%93%B7%E5%8F%96.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0070-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 單點透視法 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;大考很流行&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;出這類贅詞一堆真正用到只有一小部分的考題&lt;/strong&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/254.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0071-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0072-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 直線與圓 難度:★&lt;/strong&gt;★&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;第五個選項&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;用圓方程式解會變得比較複雜，不是不能解，也可以解!&lt;/strong&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/254-1-1024x301.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0073-890x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0074-1024x916.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 三次函數 難度:★&lt;/strong&gt;★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/269-1024x475.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0075-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0076-904x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 數據分析 難度:★&lt;/strong&gt;★★&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;第五個選項&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;這種不確定對不對的選項最難判斷了&lt;/strong&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/258-1024x577.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0078-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;高中數學 數據分析 難度:★&lt;/strong&gt;&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;考你內積的基本定義&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;A Piece Of Cake&lt;/strong&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/256-1024x281.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/05/IMG_0079-792x1024.jpg"&gt;&lt;/p&gt;</description></item><item><title>111學測試題數學A詳解</title><link>https://mathmanstudio.com/posts/111%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8a%E8%A9%B3%E8%A7%A3/</link><pubDate>Tue, 25 Apr 2023 11:26:32 +0800</pubDate><guid>https://mathmanstudio.com/posts/111%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8a%E8%A9%B3%E8%A7%A3/</guid><description>&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/254-1024x184.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0020-1-1024x669.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 排列組合 難度:★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/253-1024x189.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0021-793x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0022-1024x397.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 對數的運算 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/23-1024x463.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0028-1024x995.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 數據分析 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/216-1024x189.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0029-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 指數與對數 難度:★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/256-1024x346.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0030-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0031-1024x219.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 條件機率 貝氏定理 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/234-1-1024x265.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0032-1-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 直線方程式 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/365-1024x199.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0034-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0035-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;國中數學 不等式 二次函數 一元二次方程式 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/268-1024x315.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0036-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0037-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 三角比 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/554-1024x345.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0040-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0041-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0042-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 平面向量 難度:★★★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/234-1024x337.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0038-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0039-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 多項式 難度:★★★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/548-1024x352.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0043-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0044-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0045-792x1024.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 三角比 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/258-1024x232.png"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0046-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0047-1024x586.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 多項式 難度:★★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/234-2-1024x248.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0048-3-1024x595.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 數學期望值 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/256-1-1024x411.png"&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0049-792x1024.jpg"&gt;
&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/04/IMG_0050-1-1024x639.jpg"&gt;&lt;/p&gt;
&lt;p&gt;高中數學 矩陣 難度:★★&lt;/p&gt;</description></item><item><title>111分科測驗試題數學甲詳解</title><link>https://mathmanstudio.com/posts/111%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8%E7%94%B2%E8%A9%B3%E8%A7%A3/</link><pubDate>Tue, 04 Apr 2023 12:09:21 +0800</pubDate><guid>https://mathmanstudio.com/posts/111%E5%88%86%E7%A7%91%E6%B8%AC%E9%A9%97%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8%E7%94%B2%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/254-1-1024x308.png"&gt;&lt;/p&gt;
&lt;p&gt;前四項為
$$a_{1}=10,a_{2}=10^{2},a_{3}=10^{3},a_{4}=10^{4}$$
，接著把sigma展開得&lt;/p&gt;
&lt;p&gt;$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$&lt;/p&gt;
&lt;p&gt;$$\Rightarrow b=log_{10}10^{2}+log_{10^{2}}10^{3}+log_{10^{3}}10^{4}$$&lt;/p&gt;
&lt;p&gt;$$\Rightarrow b=2+\frac{3}{2}+\frac{4}{3}=4\frac{5}{6}$$&lt;/p&gt;
&lt;p&gt;此題只要用到一些基本的對數律就可作答，答案選(3)。&lt;/p&gt;
&lt;p&gt;範圍:高中數學 數列級數 難度:★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/234-1024x289.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:如果此三元一次方程組無解則delta必等於0，如果delta不等於0就會有一組解，我們算一下delta的行列式值&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/23456.png"&gt;&lt;/p&gt;
&lt;p&gt;接下來檢驗deltaX,deltaY,deltaZ的情況如果其中有一不為0的話必定無解，如果三個都等於0有可能無解或是無限多解，但這樣解有點小累&amp;hellip;.所以我把c=3代回原方程組發現，&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/23.png"&gt;&lt;/p&gt;
&lt;p&gt;第一式和第三式相同，所以這種情況會是兩平面重合一平面穿過去為無限多解的情況，由此可見c=-2的情況必定是無解，此題答案選(2)。&lt;/p&gt;
&lt;p&gt;範圍:高中數學 三元一次聯立方程式 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/25-1024x202.png"&gt;&lt;/p&gt;
&lt;p&gt;先嘗試畫個示意圖吧!!&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/geogebra-export-1-2-1024x608.png"&gt;&lt;/p&gt;
&lt;p&gt;題目說對角線長等於1所以可以得到
$$a^{2}+b^{2}+c^{2}=1$$
再由P到Y軸的距離可得
$$a^{2}+c^{2}=\frac{2}{3}$$
，此兩式相減可得
$$b^{2}=\frac{1}{3}\Rightarrow b=\frac{1}{\sqrt{3}}$$
上述過程用的都是畢氏定理。&lt;/p&gt;
&lt;p&gt;接著就用空間中兩向量夾角的餘弦值公式即可，忘記的同學可以複習一下&lt;strong&gt;內積的定義&lt;/strong&gt;即可。&lt;/p&gt;
&lt;p&gt;我取X軸的方向向量
$$(1,0,0)$$
與OP向量
$$(a,\frac{1}{\sqrt{3}},c)$$
得到
$$cos45^{\circ}=\frac{a+0+0}{1\times \sqrt{a^{2}+\frac{1}{3}+c^{2}}}=\frac{\sqrt{2}}{2}$$
接著用
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$0
代回上式可得
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$1
現在a,b都知道了在用對角線和為1即可得到
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$2&lt;/p&gt;
&lt;p&gt;本題答案選(4)。&lt;/p&gt;
&lt;p&gt;範圍:高中數學 空間向量 難度:★★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/03/254-2-1024x161.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:題目說g(x)整除f(x)所以先用長除法除除看，除了之後可以得到
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$3
由此兩式可以解得兩個情形
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$4
與
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$5
解著題目說g(x)=0有虛根所以&lt;code&gt;判別式必須要小於&lt;/code&gt;&lt;strong&gt;0&lt;/strong&gt;，
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$6
是合理的因此
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$7
是正解，最後將a,k套回原本的除法母式可得
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$8
解得
$$b=\sum_{n=1}^{3}log_{a_{n}}a_{n+1}=log_{a_{1}}a_{2}+log_{a_{2}}a_{3}+log_{a_{3}}a_{4}$$9
所以本題答案選(1)(4)。&lt;/p&gt;
&lt;p&gt;範圍:高中數學 多項式 難度:★★&lt;/p&gt;</description></item><item><title>112學測試題數學B詳解</title><link>https://mathmanstudio.com/posts/112%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8b%E8%A9%B3%E8%A7%A3/</link><pubDate>Tue, 14 Mar 2023 18:58:12 +0800</pubDate><guid>https://mathmanstudio.com/posts/112%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8b%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/24-1024x352.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:
$$Y=KX^{3}$$
，理論上轉速越高用電量越高(K&amp;gt;0)，成正比的定義為兩個變數呈倍數關係(此倍數不為0)，圖1即為所求，知道
$$y=x^3$$
的長相與成正比的定義即可做出。&lt;/p&gt;
&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;範圍:高中數學 多項式 難度:★&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/234-2-1024x173.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:只要會逆矩陣的求法與注意矩陣乘法沒有交換律即可輕鬆得分。&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/456-1024x98.png"&gt;&lt;/p&gt;
&lt;p&gt;$$b=\frac{7}{2},c=3,c-2b=-4$$
答案選(2)。&lt;/p&gt;
&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;範圍:高中數學 矩陣 難度:★&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/256-1-1024x281.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:假設下圖紅線為x則
$$cos22^{\circ}=\frac{150}{x},x=\frac{150}{cos22^{\circ}}$$
選項4即為所求。&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/geogebra-export-1024x608.png"&gt;&lt;/p&gt;
&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;範圍:高中數學 三角比 難度:★&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/123-1024x309.png"&gt;&lt;/p&gt;
&lt;p&gt;$$29\times \frac{1}{4}=7…,29\times \frac{1}{2}=14….,29\times \frac{3}{4}=21…$$
29名考生的分數從小排到大後Q1為第八名學生的分數,Q2為第15名學生的分數,Q3為第22名學生的分數，先畫個盒狀圖吧&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/geogebra-export-2-1024x626.png"&gt;&lt;/p&gt;
&lt;p&gt;前15名包括了Q2,Q3,P95都要加5分，這些集中趨勢量數都會跟著伸縮平移。&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/geogebra-export1-1024x567.png"&gt;&lt;/p&gt;
&lt;p&gt;因此(a,b,c,d)=(41,65,79,97) ，答案選(3)。&lt;/p&gt;
&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;範圍:國中數學 資料分析 難度:★&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/4355-1024x311.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:考基本的條件機率的定義。&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;奇數球有50個，所以機率是P(抽中7號球|抽中奇數球)=
$$\frac{\frac{1}{100}}{\frac{50}{100}}=\frac{1}{50}$$
其餘選項都一樣依此類推囉!&lt;/li&gt;
&lt;li&gt;質數有25個，
$$1/25$$&lt;/li&gt;
&lt;li&gt;7個倍數有14個，
$$1/14$$&lt;/li&gt;
&lt;li&gt;5個倍數有20個不是5的倍數有100-20=80個，
$$1/80$$&lt;/li&gt;
&lt;li&gt;小於10有9個，機率是
$$1/9$$
，此題答案為(5)。&lt;/li&gt;
&lt;/ol&gt;
&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;範圍:高二數學 機率(條件機率) 難度:★&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/02/234-3-1024x352.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:f(x)÷g(x)=可直接用長除法除，得到商為
$$y=x^3$$0
餘式為
$$y=x^3$$1
因此
$$y=x^3$$2
解著只要把a,b關係找出即可。所以根據題意用g(x)÷f(x)可得商為
$$y=x^3$$3
餘式為-3x-17其中
$$y=x^3$$4
最後再把這個關係式代回P即
$$y=x^3$$5
，答案選(3)。&lt;/p&gt;</description></item><item><title>112學測試題數學A詳解</title><link>https://mathmanstudio.com/posts/112%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8a%E8%A9%B3%E8%A7%A3/</link><pubDate>Tue, 14 Mar 2023 18:56:50 +0800</pubDate><guid>https://mathmanstudio.com/posts/112%E5%AD%B8%E6%B8%AC%E8%A9%A6%E9%A1%8C%E6%95%B8%E5%AD%B8a%E8%A9%B3%E8%A7%A3/</guid><description>&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/01/%E6%93%B7%E5%8F%961-1024x313.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:沒有懸念，由題意可得
$$\sqrt{\sqrt{\sqrt{N}}}=2\rightarrow (({{(N)^{\frac{1}{2}}})^{\frac{1}{2}}})^{\frac{1}{2}}=2 \rightarrow N^{\frac{1}{8}}=2$$
可以推得
$$N=2^{8}$$
答案選(4)&lt;/p&gt;
&lt;p&gt;範圍:國一數學 指數律 難度:★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/01/%E7%AC%AC%E4%BA%8C%E9%A1%8C-1-1024x374.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:因為tanθ沒辦法直接求，所以要先把θ換到∠COD&lt;/p&gt;
&lt;p&gt;於是
$$tan\Theta =\frac{\overline{CD}}{\overline{OC}}=\frac{\overline{CD}}{{1}}$$
簡單考考正切三角比的定義而已!!&lt;/p&gt;
&lt;p&gt;範圍:高一數學 三角比 難度:★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/01/%E7%AC%AC%E4%B8%89%E9%A1%8C-1024x412.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:題目原本的數據是
$$(s_{1},t_{1}),(s_{2},t_{2})\cdots (s_{15},t_{15})$$
接著老師要求把y座標取log變成
$$(s_{1},logt_{1}),(s_{2},logt_{2})\cdots (s_{15},logt_{15})$$
也就是說圖上的座標就是新座標的散佈圖然後要問s與t的關係為何?&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/01/Inked%E6%93%B7%E5%8F%96.jpg"&gt;&lt;/p&gt;
&lt;p&gt;我觀察到散佈圖的斜率大約為
$$\frac{\bigtriangleup y}{\bigtriangleup x}=\frac{1}{2}$$
也就是
$$\frac{1}{2}=\frac{logt}{s}\to logt=\frac{s}{2}$$
最後一步根據對數的定義把它寫回指數的樣子就ok拉
$$10^{\frac{s}{2}}=t\to10^{s}=t^{2}$$
這題說真的還蠻不好想的，坊間高中數學的參考書也不太會出現這麼靈活的題型~&lt;/p&gt;
&lt;p&gt;範圍:高二數學 數據分析 難度:★★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/01/%E7%AC%AC%E5%9B%9B%E9%A1%8C-1024x192.png"&gt;&lt;/p&gt;
&lt;p&gt;Ans:根據題目的要求我們可以發現最中間的數字除了9之外其他都不可能滿足題目的要求，像這樣
$$1234{\color{Blue} 9}8765$$
因此9就可以先不管它，現在考慮1~8這8個數字前4位遞增後4位遞減就好，於是我隨便亂排一個數字出來，8個數字全取直排有8!種例如
$$25436817$$
就是其中一種，但是根據題目規則只能把前四個數字排成
$$N=2^{8}$$0
後4個數字排成
$$N=2^{8}$$1
也就是
$$N=2^{8}$$2
所以前4個數字與後4個數字的排列數要除掉也就是有
$$N=2^{8}$$3
這麼多種方法數，這題測驗組合數學中的&lt;strong&gt;相同物排列&lt;/strong&gt;的基本觀念哦!!&lt;/p&gt;
&lt;p&gt;範圍:高二數學 排列組合 難度:★★&lt;/p&gt;
&lt;p&gt;&lt;img loading="lazy" src="https://mathmanstudio.com/wp-content/uploads/2023/01/%E7%AC%AC%E4%BA%94%E9%A1%8C-1024x373.png"&gt;&lt;/p&gt;
&lt;p&gt;陷阱題，小心別把P點當成
$$N=2^{8}$$4
Q點當成
$$N=2^{8}$$5
，以(1)選項為例，直接把
$$N=2^{8}$$6
當成三個向量擺進行列式裡加絕對值算平行六面體的體積，再用點到平面距離公式算高，點跟平面距離最遠的面積最大&amp;mdash;&amp;gt;馬上0分，除非(0,0,0)有在平面上才可以這樣解，出題者抓準了考生會誤用三階行列式解題的心理!&lt;/p&gt;
&lt;p&gt;Ans:應該再多假設1個點為T，以(1)選項為例，
$$N=2^{8}$$7
利用
$$N=2^{8}$$8
為三個向量張出的平行六面體體積來求解，其中
$$N=2^{8}$$9
為平面
$$tan\Theta =\frac{\overline{CD}}{\overline{OC}}=\frac{\overline{CD}}{{1}}$$0
的法向量的係數積，因此可以取
$$tan\Theta =\frac{\overline{CD}}{\overline{OC}}=\frac{\overline{CD}}{{1}}$$1
來做計算，從第二個選項得到
$$tan\Theta =\frac{\overline{CD}}{\overline{OC}}=\frac{\overline{CD}}{{1}}$$2
會最大，這題考到空間向量後段很容易會忽略的計算平行六面體的公式。&lt;/p&gt;</description></item></channel></rss>