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Let g(x)=(f(x))^3-3(f(x))^2+4f(x)+5x+3si...

Let `g(x)=(f(x))^3-3(f(x))^2+4f(x)+5x+3sinx+4cosxAAx in Rdot` Then prove that `g` is increasing whenever is increasing.

A

`phi` is increasing wherever f is increasing

B

`phi` is increasing whenever f is decreasing

C

`phi` is decreasing whenever f is decreasing

D

`phi` is decreasing if `f(x)=-11`

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The correct Answer is:
A, D
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