作者查詢 / deepwoody
作者 deepwoody 在 PTT [ Math ] 看板的留言(推文), 共33則
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5F推:複變可以做09/15 00:18
1F推:sin(pi-x) = sinx ; cos(pi-x) = -cosx09/04 16:37
5F推:r的範圍取決於你theta的範圍08/21 21:26
1F推:簽名檔...06/12 09:12
7F推:..囧r/*\..06/09 00:19
1F推:Dirac delta function避開點電場的奇異點06/02 22:09
2F推:帶進去就好了吧...06/01 21:44
3F→:也可以用傅立葉轉換把PDE的解解出來...06/01 21:44
1F推:用極座標你要確定跟角度無關才可以04/23 23:17
2F→:也就是換極座標之後 函數不能還有a04/23 23:17
3F→:這樣才是確保每個逼近路徑都可以04/23 23:17
3F推:圍起來的根數吧04/17 19:40