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作者 Vulpix 在 PTT [ Math ] 看板的留言(推文), 共7170則
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1F→:就是等號右邊那個意思 所以LHS的定義就是RHS11/13 14:51
2F→:都是沿著n的方向導數11/13 14:52
7F→:#1Cs1OA2A11/12 01:45
1F推:是一樣的喔 因為有2x^2-5xy-y^2=011/10 01:47
4F→:這是兩條交叉直線,直接解出直線看斜率似乎不錯?11/10 03:55
6F→:只是通分跟因式分解而已11/11 02:28
2F→:不是什麼無理根都成對的,例:x^3=2。11/09 10:10
1F→:跟前一題比起來,就只是把3換成-5吧……11/08 22:19
6F→:原po最後的答案沒有不對啊11/08 22:18
1F→:積分路徑可以一直往外推, by Cauchy's theorem.11/07 12:45
2F→:因為 |z|=7 跟 |z|=很大數字 之間根本沒有 pole11/07 12:46
3F→:你本來想算的 Residue 一個都不用算11/07 12:48
4F→:你擔心的 |z|<3 也是不用考慮的11/07 12:48