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Let f(x) = { -x^2 if x < 0 and x^2 if x>= 0. Show that f has a continuous derivative but that f"(0) does not exist.?

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  • Let f(x) = { -x^2 if x < 0 and x^2 if x>= 0. Show that f has a continuous derivative but that f"(0) does not exist.?


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