MonotonicityHard

Question

For the function f(x) = x3 − 6x2 − 36x + 7 which of the following statement is false

Options

A.f(x) is decareasing, if −2 < x < 6
B.f(x) is increasing, if −3 < x < 5
C.f(x) is increasing, if x < −2   
D.f (x) is increasing, if x > 6

Solution

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