Let f(x)=2x-tan^-1 x- ln(x+sqrt(1+x^2));...

Let `f(x)=2x-tan^-1 x- ln(x+sqrt(1+x^2)); x in R,` then

A

f (x) in non-increasing in `(-oo,oo)`

B

f (x) in non-decreasing in `(-oo,oo)`

C

f (x) is increasing in `(-oo,oo)`

D

None of these

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The correct Answer is:

B, C

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