已知f(x+3)=x^5,且f(x)可导,求f'(x+3)
问题描述:
已知f(x+3)=x^5,且f(x)可导,求f'(x+3)
答
f(x+3)=x^5
两边同时对x求导,得
f'(x+3)·(x+3)'=f'(x+3)=5x^4