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The function f(x)=cot^(-1)x +x increase...

The function `f(x)=cot^(-1)x +x` increases in the interval :

A

`(1, oo)`

B

`(-1, oo)`

C

`(-oo, oo)`

D

`(0, oo)`

Text Solution

Verified by Experts

The correct Answer is:
C
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