Question: Problem 2(*): Let f : R - R be a function defined as f (x) = if & E Q 4x -4 if x 2

Problem 2(*): Let f : R - R be a function defined as f (x) = if & E Q 4x -4 if x 2 Q. Prove, using the definition of the derivative, that f is differentiable at x = 2 and find f' (2)

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