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作者 walkwall 在 PTT [ Math ] 看板的留言(推文), 共500則

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[幾何] 請問2題國中幾何

[ Math ]4 留言, 推噓總分: +1

作者: jenshi - 發表於 2021/05/20 00:36(3年前)

2^F推walkwall: 圖形是不是有誤? 假如長方形邊長是4*2 那2根號5是05/20 04:03

3^F→walkwall: 對角線那麼F也不會在那邊題目確定沒錯?05/20 04:03

[中學] 想請教一題數學歸納法

[ Math ]3 留言, 推噓總分: +1

作者: martin7887 - 發表於 2021/05/10 21:34(3年前)

1^F推walkwall: 從n=2開始證起後面的差項是1/(2K+2)+1/(2K+1)-05/10 22:14

2^F→walkwall: 1/(K+1)05/10 22:14

3^F→walkwall: 只要能說1/(2K+1)>1/(2K+2) 就能說差項大於零05/10 22:15

Re: [中學] 請問這個算式在均一的單元名稱?

[ Math ]15 留言, 推噓總分: +3

作者: onijima - 發表於 2021/04/08 06:16(3年前)

11^F推walkwall: 均一:數學/十年級/指數與對數函數04/09 02:07

12^F推walkwall: 均一:自然/國中理化/[八下]化學反應/[觀念]莫耳數04/09 02:16

13^F→walkwall: 你是要這個嗎?04/09 02:16

14^F→walkwall: 指數不帶對數的話是:數學/七年級/整數與數線/指數與04/09 02:18

15^F→walkwall: 科學記號04/09 02:18

[其他] 無窮和極限的爭議已經徹底解決？

[ Math ]3 留言, 推噓總分: +3

作者: dharma - 發表於 2021/02/04 15:11(3年前)

3^F推walkwall: 微積分不是開頭就在講這些事?02/04 17:37

[中學] 一題國中數學

[ Math ]6 留言, 推噓總分: +4

作者: sosochick - 發表於 2021/01/28 16:56(3年前)

2^F推walkwall: 半徑r 則ABE=4.5r BCF=6r ASE+SCF=7.5r BESF=7.2r01/28 17:37

6^F→walkwall: 恩樓上的解法更簡潔01/28 23:52

[中學] 集合計數

[ Math ]4 留言, 推噓總分: +3

作者: drmath - 發表於 2021/01/20 00:11(3年前)

1^F推walkwall: 可以空集合的話 H3取5=21種?01/20 01:11

3^F推walkwall: 喔對應該要看成不一樣的01/20 01:57

[中學] 為什麼（-1）的1/3次方計算機算不出來？

[ Math ]24 留言, 推噓總分: +7

作者: lllll12b56 - 發表於 2021/01/12 12:11(3年前)

1^F推walkwall: 你有聽過虛根嗎?01/12 12:24

[機統] 遊戲的迴避率問題

[ Math ]17 留言, 推噓總分: +2

作者: dotb - 發表於 2021/01/11 02:30(3年前)

16^F→walkwall: 光看文字沒用的要實際實驗數據倒推01/11 16:21

17^F→walkwall: 有時候遊戲光是改平衡度就可能變更計算公式01/11 16:22

[中學] 圓形面積重疊區域計算

[ Math ]9 留言, 推噓總分: +4

作者: mmxmmxmmx - 發表於 2021/01/06 22:57(3年前)

9^F推walkwall: 就兩個1/6圓減去正三角01/07 00:41

[中學] 空間向量觀念

[ Math ]10 留言, 推噓總分: +6

作者: gamereplay - 發表於 2021/01/02 23:13(3年前)

1^F推walkwall: 如果平行的意思是方向向量相同就是錯的吧01/02 23:25

2^F推walkwall: 退幾步湊答案的話原題應該是線1所在平面與線2平行01/02 23:30

3^F→walkwall: 其中一組過場的用平面湊才可能最終答案是可能歪斜01/02 23:30

8^F推walkwall: 講義這樣的話答案就是錯的01/03 07:47

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