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Find the average rate of change of the function over the given intervals\" , ;: f(X) = 4x3 + 4; a) [2.41. b) i~ 4.41 K a) The average rate of change of the function f(x) : 4x3 + 4 over the interval [2,4] is [:1 (Simplify your answer.) b b) The average rate of change of the function f(x) = 4x3 + 4 over the interval [ 4,4] is D. (Simplify your answer.)