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Let f(x) = 2 tan^(-1)x + "sin"^(-1) (2x)...

Let `f(x) = 2 tan^(-1)x + "sin"^(-1) (2x)/(1 + x^(2))` then

A

max f(x) `=pi//2`

B

min f(x) `=pi//4`

C

max f(x) =`2pi`

D

none of these

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The correct Answer is:
C
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