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

If `x^(2) + y^(2) = t + (2)/(t) and x^(4) + y^(4) = t^(2) + (4)/(t^(2))`, then `x^(3)y(dy)/(dx) = `

A

-1

B

-2

C

`(y)/(x)`

D

xy

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