f(x)=nxf'(x)
求f(x) in term of n and x only
一條puremaths題目
2008-04-06 10:52 pm
回答 (2)
2008-04-07 12:52 am
✔ 最佳答案
let y=f(x)then
y=nx(dy/dx)
dx/x=n(dy/y)
lnx=nlny
y^n=x
y=x^(1/n)
2008-04-06 11:17 pm
呢題題目仲有冇其它條件??
收錄日期: 2021-04-26 13:49:56
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