If f(x)=cos(x^(2)-4[x]) for 0lt x lt 1, ...

If `f(x)=cos(x^(2)-4[x])` for `0lt x lt 1`, where [x] denotes the greatest integer `le x`, then `f'(sqrt(pi)//2)` is equal

A

`-sqrt((pi)/(2))`

B

`sqrt((pi)/(2))`

C

0

D

`(sqrt(pi))/(4)`

Text Solution

Verified by Experts

The correct Answer is:

A

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