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The value of 'x' at which f(x) = cosx is...

The value of 'x' at which f(x) = cosx is stationary are given by

A

`npi,AAn in Z`

B

`(2n+1)(pi)/(2),AA in Z`

C

`(npi)/(4),AAn in Z`

D

`(npi)/(2),AAn in Z`

Text Solution

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The correct Answer is:
A
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