作者查詢 / endlesschaos
作者 endlesschaos 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共171則
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6F推:因為速度只有切線方向 加速度切線和法線都有12/31 17:26
2F推:樓上別亂說 馬克勞林是指在原點展開的泰勒級數12/29 22:27
3F→:與其說長除法比較常應用的應該是等比級數公式 記得12/29 22:28
4F→:考慮公比的收歛性就可以展出正確答案了12/29 22:28
1F推:與齊性重根怎麼反而會是除以 x?12/03 22:20
1F推:y=3 的地方才是 homogeneous B.C. 1沒有11/03 09:26
4F→:第一題你就算令 2x - x^2 = u^2 也積得出來10/30 03:34
1F推:分部積分 ∫u dv = uv - ∫v du10/27 07:46
3F→:不同項都是由 y、y'、y" 相乘兩次而來的意思10/05 03:10
6F→:同樣次數即可 你可以發現做這樣變數變換後他們所乘10/05 03:16
7F→:的 y 都只有一次 因此最後結果都會變成同次數並可以10/05 03:17
8F→:一次除掉10/05 03:17
2F推:dr(t)/dt 是 v(t) 吧 單位化之後才是單位切向量09/18 01:02
4F推:向量沒有所謂的 ∞ 或 -∞ 這種東西......09/06 18:55
9F推:放得不同是有原因的啊 d^2 y/dx^2 = d(dy/dx)/dx09/07 18:32
10F→:≠ (dy/dx)^2 這跟這裡的用法差很多吧 拿來舉例幹嘛09/07 18:34
1F推:可以08/14 20:11