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作者 whalelover 在 PTT [ Math ] 看板的留言(推文), 共201則

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[中學] cos 10度＝？

[ Math ]5 留言, 推噓總分: +3

作者: DreamYeh - 發表於 2021/10/19 16:17(4年前)

1^F推whalelover: 不行請參考Casus irreducibilis10/19 16:32

[機統] 分班問題

[ Math ]5 留言, 推噓總分: +4

作者: DreamYeh - 發表於 2019/08/06 20:45(6年前)

5^F推whalelover: C(175,24)/C(199,24)~3.72%08/07 00:47

如何用一般計算機算出0.75次方?

[ Math ]12 留言, 推噓總分: +5

作者: steveaustin - 發表於 2018/07/21 13:05(7年前)

3^F推whalelover: 有開根號功能就可以 √(√(x*x*x))07/21 13:35

[機統] 期望值的謬誤？(更新）

[ Math ]26 留言, 推噓總分: +6

作者: Kndog - 發表於 2018/05/31 19:50(7年前)

6^F推whalelover: 可是瑞凡 Σn*(0.5)^n收斂05/31 20:02

[其他] 一題極限

[ Math ]1 留言, 推噓總分: +1

作者: mayuyukirin - 發表於 2018/03/04 23:44(8年前)

1^F推whalelover: a_n = 3n^2 - 3(n-1)^2 = 6n -303/05 00:00

[其他] 歐拉恆等式問題

[ Math ]7 留言, 推噓總分: +1

作者: ecstasy1 - 發表於 2018/02/26 23:44(8年前)

1^F→whalelover: "沒聽過平方後還是負數" 那你知道i是什麼嗎?02/27 00:06

2^F→whalelover: 這是複分析的東西可以先了解一下複數的概念02/27 00:07

[中學] 面積問題

[ Math ]2 留言, 推噓總分: +1

作者: adamchi - 發表於 2018/02/25 14:40(8年前)

1^F推whalelover: 座標化即可解02/25 16:50

[其他] 台大(C)pde題目

[ Math ]1 留言, 推噓總分: +1

作者: lious1686 - 發表於 2018/01/14 21:12(8年前)

1^F推whalelover: d'Alembert's solution01/15 00:40

[微積] 反曲點

[ Math ]1 留言, 推噓總分: +1

作者: c8c96387 - 發表於 2018/01/12 23:44(8年前)

1^F推whalelover: 困難點是？不就二次微分等於零嗎01/13 01:03

[微積] 積分問題

[ Math ]1 留言, 推噓總分: +1

作者: sos976431 - 發表於 2018/01/11 22:41(8年前)

1^F推whalelover: 三角代換令z'=r*tanx,dz'=r*(secx)^2 dx01/11 22:58

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