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The function f(x)=tan^(-1)(sinx+cosx) is...

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

A

`(0, pi/2)`

B

(-pi/4, pi/2)`

C

`(pi/4, pi/2)`

D

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

Text Solution

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The correct Answer is:
D
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