函数f(x)=3x^2-2x,且f'(a)小于4f'(1),则实数a的取值范围是

问题描述:

函数f(x)=3x^2-2x,且f'(a)小于4f'(1),则实数a的取值范围是

f(x)=3x^2-2x
f'(x)=6x-2
f'(a)<4f'(1)
6a-2<4(6-2)
6a<18
a<3
a∈(-∞,3)