函数y=x3-x2-x的单调增区间为_.
问题描述:
函数y=x3-x2-x的单调增区间为___.
答
∵y=x3-x2-x∴y'=3x2-2x-1
令y'=3x2-2x-1>0∴x<-
或x>11 3
故答案为:(-∞,-
),(1,+∞)1 3