数学对数导数题f(x)=e^x In x x大于0,求f'(1)
问题描述:
数学对数导数题
f(x)=e^x In x x大于0,求f'(1)
答
e
答
复合函数求导的问题
f'(x)
=(e^x)'In x+e^x(In x)'
=e^x In x+e^x /x
代入数值得到f'(1)=e