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Mathematics 19 Online
OpenStudy (anonymous):

need help in differentiation!!! The function f(x) = (x^4 - 42x^2 - 80x +32)^3 is A) monotonically increasing in (-4,-1_)U(5,∞) B) monotonically increasing in (-∞,-4)U(-1,5) C) monotonically decreasing in (-4,5)

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