# Differentiability of Functions

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5. Let f be twice differentiable on (a,b). If g is an antiderivative of f" on (a,b), then then g ' (x) must equal :

A. f(x)

B. f(x)

C. f"(x)

D. f(x) + C, for some C not necessarily 0

E. f"(x) + C, for some C not necessarily 0

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5. Let f be twice ...

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