推 kagato:我論這題故意讓你跳進Green's theorem 的 Orz 01/21 23:18
→ aeronautical:一題5分算到很無力 01/21 23:24
→ honestonly:答案是(2/pi)-(pi/4)-1嗎?? 01/21 23:33
→ aeronautical:答案是-2/π- π/4 01/21 23:37
→ honestonly:驚!! 01/21 23:39
→ aeronautical:我亂算覺得 那π/4是三角形面積..-2/π我還是算不出 01/21 23:39
→ aeronautical:h大..你用哪招算的呀.用路徑參數嗎? 01/21 23:41
→ honestonly:沿著線就算對了 爲什麼不能用Green's?? 01/21 23:49
→ honestonly:用Green's爲什麼會錯呀= =?有什麼條件不滿足嗎? 01/21 23:50
→ honestonly:還是 積分先後順序的問題? 01/21 23:57
→ kagato:繞路徑答案也一樣 = =a 01/21 23:58
→ honestonly:用Green's跟路徑我都算出來了 Green's要先積dy方向 01/21 23:59
→ CRAZYAWIND:這題用線積分也可以算@@~ 01/22 00:01
→ honestonly:dx方向 爲什麼不能先積呀?我微積分超弱的= = 01/22 00:04
→ kagato:可以阿，注意上下標就ok 01/22 00:06
→ CRAZYAWIND:對X可以積 01/22 00:08
→ honestonly:我知道了..我上標寫成x=(pi/2)y...囧rz 01/22 00:10
→ honestonly:咦..等等我又看錯了..囧 01/22 00:11