设函数f（x）在R上可导，其导函数为f′（x），且函数y=（1﹣x）f′（x）的图象如图所示，则下列结论中一定成立的是

题干

设函数f（x）在R上可导，其导函数为f′（x），且函数y=（1﹣x）f′（x）的图象如图所示，则下列结论中一定成立的是（）

A：函数f（x）有极大值f（2）和极小值f（1）

B：函数f（x）有极大值f（﹣2）和极小值f（1）

C：函数f（x）有极大值f（2）和极小值f（﹣2）

D：函数f（x）有极大值f（﹣2）和极小值f（2）

上一题下一题 0.0难度选择题更新时间:2017-11-18 08:04:04

D

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