推 bs1435:ln|1-V^3|微分會跟原本的左式差一個負號喔!125.228.151.126 05/20 19:29
推 Frobenius:3v^2/(1-v^3)dv=(2/x)dx140.122.225.109 05/20 22:24
→ Frobenius: => 3v^2/(v^3-1)dv=-(2/x)dx140.122.225.109 05/20 22:24
→ Frobenius:㏑|v^3-1|= -2㏑|x|+ C 書本沒有寫錯140.122.225.109 05/20 22:25
推 boboptt:那我ln |1-V^3| = -2ln |x|也對囉? 61.59.237.140 05/20 23:16
→ boboptt:原本的左式差一個負號我給右式 61.59.237.140 05/20 23:18
推 Frobenius:也對，只不過你的C跟書本上的C差了負號140.122.225.109 05/21 02:02
→ boboptt:ok 的確是負號給了C 沒注意到說~ ^^" 140.124.104.7 05/22 17:25