If x=(1-t^(2))/(1+t^(2)) and y=(2t)/(1+t...

If `x=(1-t^(2))/(1+t^(2))` and `y=(2t)/(1+t^(2))`, then `(dy)/(dx)` is equal to

A

`-y/x`

B

`y/x`

C

`-x/y`

D

`x/y`

Verified by Experts

The correct Answer is:

C

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