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Let f(x)=2x+cot^(-1)x. Then f(x)+ln(sqrt...

Let `f(x)=2x+cot^(-1)x`. Then `f(x)+ln(sqrt(1+x^(2))-x)`

A

increases in `(-oo,oo)`

B

decreases in `(-oo,oo)`

C

neither increases nor decreases in `(0,oo)`

D

increases as well as decreases in `(-oo,oo)`

Text Solution

Verified by Experts

The correct Answer is:
A
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