《二十五,二十一》羅希度的數學程度 - 韓劇

By Brianna
at 2022-04-10T18:00
at 2022-04-10T18:00
Table of Contents
剛剛心血來潮,想算算看劇中有出現的兩道數學題目
(貼在廁所前把答案當作密碼),
看看難度到底是如何XD
(以下超簡單翻譯,歡迎高手補充)
第一張題目:
https://i.imgur.com/EUKO9lv.png
1.座標平面上的兩點A(3,6)與B(-2,6),C點為A點相對於X軸的落點
,求線段BC長度?
A:
得知C的座標後,也順便得知ABC其實是一個直角三角形,
於是運用畢式定理,就可以得出此三角形的斜邊也就是BC線段。
C =(3,-6)
線段AB = 5,線段AC = 12,
線段BC^2 = 5^2 + 12^2 = 25 + 144 = 169
故線段BC = 13
2.如圖所示,存在一個等腰三角形ABC。當<ACD=80度時,
<B = 多少度?(線段CA=線段CB)
A:
得知線段CA = 線段CB後,便可知道<A = <B
而又知<ACB = 180 - 80 = 100
所以<ACB + <A + <B = 180
2<B = 180 - 100 = 80
<B = 40
所以第一張的廁所密碼為:1340
https://i.imgur.com/f0BBgjZ.png
估計第一題所需計算時間為:5分鐘
白先生是不是有先偷算!!?
第二張題目:
https://i.imgur.com/1bcA6Fk.png
1.求x+y=?
A:
由圖得知
x^2 + 16^2 = 20^2
=> x^2 = 400 - 256 = 144
=> x = 12
x^2 + y^2 = 13^2
=> y^2 = 13^2 - x^2 = 13^2 - 20^2 + 16^2 = 169 - 400 +256 = 25
=> y = 5
所以 x+y = 17
2.二次元方程式(x+1)(x-3)=0,其中X的根分別是m與n,求m^2+n^2=?
A:
從此方程式可判斷 x = -1, 3
所以m^2+n^2 = (-1)^2 + 3^2 = 1 + 9 = 10
所以第二張的廁所密碼為:1710
https://i.imgur.com/h08Gfzj.png
估計第二題所需計算時間為:5分鐘
看影片白先生大概花了10秒!
結論:
這兩大題共四小題,其實難度都不難,
大概是台灣的國中程度,
但也是要花一些時間計算,
內急的我們希度一時算不出來也是情有可原(?
絕對不是因為體育班的關係(?
(對不起追完劇的我真的好無聊XD)
https://i.imgur.com/pBQT1ai.png
--
(貼在廁所前把答案當作密碼),
看看難度到底是如何XD
(以下超簡單翻譯,歡迎高手補充)
第一張題目:
https://i.imgur.com/EUKO9lv.png

,求線段BC長度?
A:
得知C的座標後,也順便得知ABC其實是一個直角三角形,
於是運用畢式定理,就可以得出此三角形的斜邊也就是BC線段。
C =(3,-6)
線段AB = 5,線段AC = 12,
線段BC^2 = 5^2 + 12^2 = 25 + 144 = 169
故線段BC = 13
2.如圖所示,存在一個等腰三角形ABC。當<ACD=80度時,
<B = 多少度?(線段CA=線段CB)
A:
得知線段CA = 線段CB後,便可知道<A = <B
而又知<ACB = 180 - 80 = 100
所以<ACB + <A + <B = 180
2<B = 180 - 100 = 80
<B = 40
所以第一張的廁所密碼為:1340
https://i.imgur.com/f0BBgjZ.png

估計第一題所需計算時間為:5分鐘
白先生是不是有先偷算!!?
第二張題目:
https://i.imgur.com/1bcA6Fk.png

1.求x+y=?
A:
由圖得知
x^2 + 16^2 = 20^2
=> x^2 = 400 - 256 = 144
=> x = 12
x^2 + y^2 = 13^2
=> y^2 = 13^2 - x^2 = 13^2 - 20^2 + 16^2 = 169 - 400 +256 = 25
=> y = 5
所以 x+y = 17
2.二次元方程式(x+1)(x-3)=0,其中X的根分別是m與n,求m^2+n^2=?
A:
從此方程式可判斷 x = -1, 3
所以m^2+n^2 = (-1)^2 + 3^2 = 1 + 9 = 10
所以第二張的廁所密碼為:1710
https://i.imgur.com/h08Gfzj.png

估計第二題所需計算時間為:5分鐘
看影片白先生大概花了10秒!
結論:
這兩大題共四小題,其實難度都不難,
大概是台灣的國中程度,
但也是要花一些時間計算,
內急的我們希度一時算不出來也是情有可原(?
絕對不是因為體育班的關係(?
(對不起追完劇的我真的好無聊XD)
https://i.imgur.com/pBQT1ai.png

--
Tags:
韓劇
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