函数f(x)满足f(x-1)=1-2x+x²,则f(x)的导数等于?
问题描述:
函数f(x)满足f(x-1)=1-2x+x²,则f(x)的导数等于?
答
f(x-1)=1-2x+x²=(x-1)²
f(x)=x²
f'(x)=2x