If x2+y2=t+1t and x4+y4=t2+1t2, then prove that dydx=−yx – InterviewSolution

1.	If x2+y2=t+1t and x4+y4=t2+1t2, then prove that dydx=−yx
Answer» If $x^{2} + y^{2} = t + \frac{1}{t}$ and $x^{4} + y^{4} = t^{2} + \frac{1}{t^{2}}$ , then prove that $\frac{d y}{d x} = - \frac{y}{x}$

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