f(x)=(x^2-1)^3+1f'(x)=3(x^2-1)^2*2x=6x(x+1)^2(x-1)^2令f'(x)=0得x=0,-1,1而x<-1,f'(x)<0,函数单调递减-100,函数单调递增x>1,f'(x)>0,函数单调递增所以函数在x=0处取得极小值为f(0)=0