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If x^(2) + y^(2) = t + (1)/(t) and x^(4)...

If `x^(2) + y^(2) = t + (1)/(t) and x^(4) + y^(4) = t^(2) + (1)/(t^(2))` then `(dy)/(dx) =`

A

`(-x)/(y)`

B

`(-y)/(x)`

C

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

D

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

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The correct Answer is:
B
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