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

If `x=(2t)/(1+t^2),y=(1-t^2)/(1+t^2),t h e nfin d(dy)/(dx)a tt=2.`

A

` (2t)/( t^(2) -1)`

B

`(2t)/( 1-t^(2))`

C

` (b^(2) x)/( a^(2)y)`

D

` (-b^(2)x)/( a^(2)y)`

Text Solution

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The correct Answer is:
A
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