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