Question: Problems ( 5 points ) Let f : R R be a continuous function. Assume also that f is differentiable for all x 0 and

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(5 points) Let f:RR be a continuous function. Assume also that f is differentiable for all x0 and that limx0f'(x) exists. Is it true that f(x) must also be differentiable at x=0?
Problems ( 5 points ) Let f : R R be a continuous

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