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

If `x^2+y^2=t-1/t` and `x^4+y^4=t^2+1/(t^2)` , then prove that `(dy)/(dx)=1/(x^3y)`

A

0

B

1

C

-1

D

None of these

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B
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