JEE Math Practice Question
The function $$f\left( x \right) = {\tan ^{ - 1}}\left( {\sin x + \cos x} \right)$$ is an incresing function in
- A.$$\left( {0,{\pi \over 2}} \right)$$
- B.$$\left( { - {\pi \over 2},{\pi \over 2}} \right)$$
- C.$$\left( { {\pi \over 4},{\pi \over 2}} \right)$$
- D.$$\left( { - {\pi \over 2},{\pi \over 4}} \right)$$
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