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The function f(x)=Tan^(-1) (sinx+cosx) i...

The function `f(x)=Tan^(-1) (sinx+cosx)` is an increasing function in

A

`((-pi)/(2),(pi)/(4))`

B

`(0,(pi)/(2))`

C

`((-pi)/(2),(pi)/(2))`

D

`((pi)/(4),(pi)/(2))`

Text Solution

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The correct Answer is:
A
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