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If y = (1+1/x^(2))/(1-1/x^(2)) then dy/d...

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

A

`(-4x)/((x^(2)-1)^(2))`

B

`(-4x)/(x^(2)-1)`

C

`(1-x^(2))/(4x)`

D

`- (4x)/(x^(2)-1)`

Text Solution

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The correct Answer is:
A
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