Let Assume that f has a continuous derivative on a, b. Show tha p(x) such that |f(r) – p(x)| < e and |f' (x) – p (x)| < e for all r e (a) Show f is defined for r > 0. (b) Show that f is continuous on (0, 0). (c) Is f differentiable on (0, 0)?

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