已知函数f(x)的导函数为f′(x),满足f(x)=2xf′(2)+x3,则f′(2)等于(  )A.-8B.-12C.8D

2024-12-03 04:48:09
推荐回答(1个)
回答1:

∵f(x)=2xf′(2)+x3
∴f'(x)=2f′(2)+3x2
令x=2,
则f'(2)=2f′(2)+3×22=2f′(2)+12,
即f′(2)=-12.
故选:B.