Using the derivative of f(x) given below, determine the intervals on which f(x) is increasing or decreasing.f'(x) = (x + 3)2 e-x
A. Never decreasing; increasing on (-?, 3) ? (3, ?)
B. Never increasing; decreasing on (-?, -3) ? (-3, ?)
C. Decreasing on (-?, -3); increasing on (-3, ?)
D. Never decreasing; increasing on (-?, -3) ? (-3, ?)
Answer: D
Mathematics
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