Question: Let f : R R be the following function: f(x)=2x x <11 x 21 1 cos(x 1)>1 Where is f differentiable? where is f not

Let f : R R be the following function: f(x)=2x x <11 x 21 1 cos(x 1)>1 Where is f differentiable? where is f not differentiable? what is f at the points of differentiabilty?

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