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作者 BaBi 在 PTT [ Math ] 看板的留言(推文), 共164則
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3F→: 變數變換配合高斯積分05/05 19:55
5F→: 給樓上…其實兩種都有人寫,Wolfram上寫是Hospital10/21 20:00
49F→: 王博的書也不算基本教義派啊…放一堆機歪題讓初學者08/31 13:46
50F→: 覺得微積分很難,排版又不慎理想,還放了高微的東西08/31 13:47
51F→: 卻有不少缺漏,橢球表面積能用Jacobian積出真的太強08/31 13:51
52F→: 開放式課程看一看比較實在08/31 13:51
65F→: 補過習,不推他的課。09/01 20:02
3F→:Got it!04/28 20:42
9F→:#1G3fON5y (Math) about zorich01/28 22:40
1F推:(1) pi(ln2)?11/26 14:34
5F→:我也是這樣算的, 不過後面 int ln(sinx) dx 項因為常11/26 19:15
6F→:碰到, 答案已經記起來了, 所以...11/26 19:16
1F→:(a)項就發散掉了不會是0吧?11/25 20:29
3F→:在這裡由於單邊就會發散, 不能利用奇函數對消吧?11/25 20:49
4F→:∞+∞仍然是∞這可以理解, 但∞-∞未必是0呀...11/25 20:51
26F→:int f(x) [-∞,∞] 和 lim k->∞ int f(x) [-k,k]11/25 22:32
28F→:Orz 上面請看成()括弧> " <11/25 22:33
30F→:比如 int x (-∞,∞)發散, 但他柯西主值是0...11/25 22:33
3F→:所以是最近中山都在夯這題嗎XDD11/19 23:55
12F→:t < 0的話, 沒辦法讓 x->0+ 呀0.011/20 12:47
3F→:全幅半幅展開後的週期不能用"看"的11/16 18:52
4F→:比方同樣是定義於0≦x≦L的f(x)11/16 18:53
5F→:半幅展開後是以-L≦x≦L為一個週期11/16 18:54
6F→:全幅展開則是以0≦x≦為一個週期11/16 18:54