given the curve : y= x^2/(1+x)-4/3 , where x is not equal to-1.
use the 1st dy/dx :(2x+x^2)/(1+x)^2 to prove 2nd dy/dx =2/(1+x)^3
收錄日期: 2021-04-22 00:41:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090429000051KK00995