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作者 toba 在 PTT [ Math ] 看板的留言(推文), 共16則

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[幾何] 請教一題國中幾何證明

[ Math ]14 留言, 推噓總分: +3

作者: toba - 發表於 2024/04/16 21:33(1周前)

2^F→toba: 補充，我有用相似形和平行線成比例線段證明出來，04/16 22:13

3^F→toba: 但是學生的補習班老師說這是國八觀念就可以解決了04/16 22:13

4^F→toba: ？04/16 22:13

8^F→toba: 限制是：不用切割線性質、不用相似性、比例線段！04/17 07:26

9^F→toba: 因為學生剛學完三角形全等而已，補習班老師就出了04/17 07:26

10^F→toba: 這個他說『很簡單』的04/17 07:26

11^F→toba: 題目04/17 07:26

12^F→toba: 學生頂多還多學了平行線性質而已，看來是補習班老04/17 07:30

13^F→toba: 師想炫技而已04/17 07:30

Re: [幾何] 請教一題國中幾何證明

[ Math ]2 留言, 推噓總分: +1

作者: cuteSquirrel - 發表於 2024/04/16 23:17(1周前)

1^F推toba: 感謝！04/17 07:18

[幾何] 請教一題證明題

[ Math ]2 留言, 推噓總分: +1

作者: toba - 發表於 2022/10/21 23:40(1年前)

2^F→toba: 感激不盡！10/22 14:22

[中學] 過某點的直線方程式，最小值問題

[ Math ]6 留言, 推噓總分: +2

作者: toba - 發表於 2021/07/10 13:53(2年前)

2^F→toba: 我得出(a-5)(b-6)=30，接下來就湊不出來了=.=07/11 01:00

4^F→toba: a+b湊得出來，但a^2+b^2沒辦法07/11 10:55

6^F→toba: 哇！感激不盡07/11 14:25

Re: [中學] 過某點的直線方程式，最小值問題

[ Math ]2 留言, 推噓總分: +2

作者: Honor1984 - 發表於 2021/07/11 02:39(2年前)

1^F推toba: 補充一下，a和b皆是正數07/11 08:55

Re: [代數]問一題四元方程式的題目

[ Math ]4 留言, 推噓總分: +4

作者: Vulpix - 發表於 2019/09/18 15:17(4年前)

4^F推toba: 感激不盡！09/19 15:10

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