If f(x)=||x|-1| ,then the number of points where f(x) is not differentiable is

Let f(x)=|x|-1 ,then the number of points where f(x) is not differentiable is

Consider the function f(x)=min{|x^(2)-9|,|x^(2)-1|} , then the number of points where f(x) is non - differentiable is/are

Consider the function f(x)=min{|x^(2)-4|,|x^(2)-1|} , then the number of points where f(x) is non - differentiable is/are

The number of points where f(x)=|x^(2)-3|x|-4| is non - differentiable is

If f(x) = [[x^(3),|x| =1] , then number of points where f(x) is non-differentiable is

Let f(x) = ||x|-1| , then points where, f(x) is not differentiable is/are

If f(x)=|x^(2)-3x+2|+|sinx| then number of points where f(x) is not differentiable in [-pi,pi] is