Q 1644134953.     If `f(x) = 2 tan^{-1}x + sin^{-1} ( \frac{2x}{1 + x^2} ) ,x > 1`, then `f(5)` is equal to :

JEE 2015 Mains 10 April
A

`\pi`

B

`\frac{\pi}{2}`

C

`4 tan^{-1}(5)`

D

`tan^{-1} ( \frac{65}{156} )`

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