Question

.设f(x)=3x³－4x²＋10x－5,则f′(1)的值为

A.6                                                                 B.8

C.11                                                                D.13

Answer 1

C

解析:

本题考查函数在某一点处的导数，即为导函数在该点处的函数值.

f′(x)=(3x³)′－(4x²)′＋(10x)′－5′=9x²－8x＋10,∴f′(1)=9－8＋10=11.