If f(x)=sqrt(1+cos^2(x^2)),thenf'(sqrtpi...

If `f(x)=sqrt(1+cos^2(x^2))`,then`f'(sqrtpi/2)` is

A

`sqrtpi//6`

B

`-sqrt((pi//6))`

C

`1//sqrt6`

D

`pi//sqrt6`

Verified by Experts

The correct Answer is:

B

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