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Consider the function f(x) = ax(19 - x) on the interval [9,10], where a is a positive real number. Answer parts (a) and (b)

Consider the function f(x) = ax(19 - x) on the interval [9,10], where a is a positive real number. Answer parts (a) and (b) below. a. Find the average value of f as a function of a. %3D

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