IF y=ln( (x+1)^1/2 + (X-1)^1/2 )
Prove (x^2-1) d^2y/dx^2 + x dy/dx = 0
PURE Maths PRove
2007-10-22 7:05 pm
回答 (1)
2007-10-23 4:22 am
收錄日期: 2021-04-13 15:36:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071022000051KK00788