填空:若函数f(x)=x^3-f'(1)x^2+2x-5,则f'(2)=
问题描述:
填空:若函数f(x)=x^3-f'(1)x^2+2x-5,则f'(2)=
答
f'(x)=3x^2-2f'(1)x+2
f'(1)=3-2f'(1)+2
f'(1)=5/3
f'(2)=12-4f'(1)+2=14-4*5/3=14-20/3=22/3