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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 `(dy)/(dx)=`

A

`x/y`

B

`-xy`

C

`-y/x`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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