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作者 newversion 在 PTT [ trans_math ] 看板的留言(推文), 共78則
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3F推: 分母是正的;分子~(-100000000)^(1/3)是正是負?10/05 15:37
2F推:嚴格來說n不連續,不能直接微分 要先換成 2^(1/x)12/03 04:44
3F→:lim n->∞ ... = lim x->∞ ...12/03 04:45
4F推:夾擠定理, 提示 x^2/(x^2+y^2) < 1140.112.251.86 07/14 17:34
4F推:樓上 1/√(5/4) 才對140.112.251.86 06/24 15:47
4F推:線積分也有散度定理,結案。140.112.251.86 06/12 00:56
1F推:寫出double integral的定義,直接帶進140.112.251.86 06/01 20:08
2F→:去140.112.251.86 06/01 20:08
4F推:http://tinyurl.com/mbh46oc140.112.251.86 06/01 22:09
5F→:請把這頁看懂140.112.251.86 06/01 22:10
6F→:第2題考Properties of Double Integral140.112.251.86 06/01 22:10
7F→:答案= 3*3 + 7*7 + 8140.112.251.86 06/01 22:11
1F推:你第一行正負弄錯了140.112.251.86 06/01 00:05
1F推:(1) 圖形z=f(x,y) z增加最快的方向140.112.251.86 05/27 00:49
2F→:(2) 曲線 f(x,y)=C 的法向量方向140.112.251.86 05/27 00:50
1F推:∫0-->1 e^(-3u) du 變元代換140.112.251.86 05/24 22:17
2F→:不過前面還要乘系數140.112.251.86 05/24 22:17
4F→:Wolfram 條件太強了140.112.251.86 05/19 19:08