1.

Let f:[1,1]→R be a function defined by f(x)={x2∣∣cosπx∣∣ for x≠0,0 for x=0. The set of points where f is not differentiable is

Answer»

Let f:[1,1]R be a function defined by
f(x)={x2cosπx for x0,0 for x=0.
The set of points where f is not differentiable is



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