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"If "y=cos^(-1)((2x)/(1+x^(2)))," then "...

`"If "y=cos^(-1)((2x)/(1+x^(2)))," then "(dy)/(dx)` is

A

`(-2)/(1+x^(2))` for all x

B

`(-2)/(1+x^(2))" for all "|x|gt1`

C

`(2)/(1+x^(2))" for "|x|lt1`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
D
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