Differential Eq.

2013-11-02 4:25 am
Find all solutions of 2xy=4x²(dy/dx)+(dy/dx)².
更新1:

Sorry, I made ​​a serious error, the correct problem is "Find all solutions of y=2xy'(1+y')."

回答 (3)

2013-11-10 5:15 am
✔ 最佳答案
﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣


圖片參考:http://imgcld.yimg.com/8/n/HA05107138/o/20131109211510.jpg
2013-11-03 9:21 pm
Wolfram is powerful, he can get 80 points.

2013-11-03 17:20:52 補充:
No, he misses the sol. -x/2.
2013-11-03 7:55 am
http://www.wolframalpha.com/input/?i=y%3D2xy'(1%2By')

我都想知方法~

2013-11-03 14:50:06 補充:
You want to say he misses the trivial solution of y = 0?

=P


收錄日期: 2021-04-23 23:28:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20131101000051KK00183

檢視 Wayback Machine 備份