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作者 Vulpix 在 PTT [ Math ] 看板的留言(推文), 共7235則
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17F推: 三條餘弦定理,解三元二次方程。02/24 01:08
7F推: 用三角代換吧,換一換就能算出√2。02/21 17:33
1F→: CD是高=602/20 22:01
1F→: https://en.wikipedia.org/wiki/Moduli_space 吧02/20 21:55
11F→: 空間上當然不只有標準內積,但這題答案只剩k*標準02/18 15:57
12F→: 內積,其中k>0。02/18 15:57
10F→: 基本上都是 e^y*cos(y),積分方法翻翻課本都有。02/17 03:45
14F→: 那一項的A是1喔。因為是第一段。02/17 14:05
2F→: 扣掉n,平均是n/2。扣掉1,平均是n/2+1。02/17 01:01
1F推: 這題相當於:已知頂多三次的多項式過某兩點,兩條02/15 19:42
2F→: 切線也已知。是否恰有一個這樣的多項式?答案是Y。02/15 19:42
3F推: 原來有這麼好用的插值XD02/17 00:40