作者查詢 / endlesschaos
作者 endlesschaos 在 PTT [ Math ] 看板的留言(推文), 共394則
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4F推: e 是常數跟 e^(-u) 是不是常數一點關係都沒有啊09/30 04:38
5F→: 如果 e^(-u) 對 u 是常數 那 d[e^(-u)]/du 豈不是009/30 04:39
4F推: 有錯 算下去數列全部都是 0 才能讓等式恆成立07/23 01:41
9F推: Sn-1 不是 Sn - 1 而是到 n-1 項的和吧......07/23 01:50
10F→: D大你打的那兩個是一樣的XD07/23 01:51
2F推: 或者令 x = tan t dx = sec^2 t dt 也可以05/24 22:19
1F推: 你不覺得你的問題描述得太模糊了點嗎?ABC完全沒任05/03 02:23
2F→: 何線索要怎麼給建議?如果不收斂的話先用 bisection05/03 02:24
3F→: 找根 其他的要看 ABC 的形式究竟如何才能決定05/03 02:25
3F推: 解析證法就是證明有 global minimum 或者是收斂到02/05 15:25
4F→: M 然後 global minimum 或 M 大於等於 0 這樣02/05 15:26
1F推: 如果是正六面體的話最大截面不是4根號2嗎?01/26 17:26
26F推: 那你的複數又是怎麼定義的?11/26 08:47
7F推: 對角化不會比高斯消去快11/20 17:11
10F推: 高斯消去法只做到 upper triangular 而已 真正做到11/21 12:39
11F→: 完全對角化的是 Gauss-Jordan 消去法11/21 12:39
2F推: 很不一樣是怎樣不一樣?能找到 2n+1 = 0 嗎?09/01 16:48
3F推:第一題答案是 2pi 週期函數的合成仍是週期函數 但07/02 12:56
4F→:相加後不是 然後上一行打太快是 pi 才對......07/02 12:58