" Q."16" Let "f(x)=x_(" 作 ")" .The setofpoints where "f(x)" is twice differentiable is: "

The set of points where ,f(x)=x|x| is twice differentiable is

The set of points where , f(x) = x|x| is twice differentiable is

The set of points where , f(x) = x|x| is twice differentiable is

The set of points where , f(x) = x|x| is twice differentiable is

Let f(x)=x|x| . Then the set of points where f(x) is twice differentiable is -

Let f(x) = x|x| . The set of points, where f (x) is twice differentiable, is ….. .

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

Let f : R rarr R be a function defined by f(x) = max {x,x^(3)} . The set of all points where f(x) is not differentiable is

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

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