Let f(x) = 35x2/7 (a) Find the derivative of the function f. (Simplify your answer completely.) 10 (b) State the domain of f and the domain of f'. (Enter your answer using interval notation.) The domain of f is The domain of f'is (c) Determine the value(s) of x in the domain of f, if any, at which the function is not differentiable. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) (Hint: find the value(s) of x where f'is not defined, then check if the value(s) of x is in the domain of f.)

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