If y=cos^(-1)((2x)/(1+x^2)),t h e n(dy)/...

If `y=cos^(-1)((2x)/(1+x^2)),t h e n(dy)/(dx)i s` `(-2)/(1+x^2)` for all `x` (b) `(-2)/(1+x^2)` for all `|x|<1` `2/(1+x^2)` for `|x|>1` (d) none of these

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

Verified by Experts

The correct Answer is:

D

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