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ASU 276 All Soviet Union MO 1979 system (x-y\sqrt{x^2-y^2})/(\sqrt{1-x^2+y^2})=b

Source:

July 14, 2019
algebrasystem of equations

Problem Statement

Find xx and yy (aa and bb parameters): {xyx2y21x2+y2=ayxx2y21x2+y2=b\begin{cases} \dfrac{x-y\sqrt{x^2-y^2}}{\sqrt{1-x^2+y^2}} = a\\ \\ \dfrac{y-x\sqrt{x^2-y^2}}{\sqrt{1-x^2+y^2}} = b\end{cases}