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Let f(x) be a differentiable function su...

Let f(x) be a differentiable function such that
`f'(x)=sinx+sin4xcosx.` Then `f'(2x^(2)+(pi)/(2))"at "x=sqrt((pi)/(2))` is equal to

A

`-1`

B

`0`

C

`-2sqrt(2pi)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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