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The function f(x) = tan^(-1) (sin x + co...

The function `f(x) = tan^(-1) (sin x + cos x), x gt 0` is always an increasing function on the interval

A

(0, (5pi)/4)`

B

(0,pi/2)`

C

`(0, pi/4)`

D

`(0,(3pi)/4)`

Text Solution

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The correct Answer is:
C
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