如題= =
d
__ (x^x) = ?
dx
f(x)=x^x f'(x) = ?
2008-08-02 6:41 am
回答 (2)
2008-08-02 6:59 am
✔ 最佳答案
Let y=x^xlny=xlnx
d(lny)/dx=x(1/x)+lnx=lnx+1
(1/y)y'=lnx+1
y'=y(lnx+1)
y'=x^x(lnx+1)
so f'(x)=x^x(lnx+1) [f(x)=x^x]
2008-08-02 6:44 am
可能冇呢
收錄日期: 2021-04-25 17:28:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080801000051KK03525