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(log(x^2+y^2)+2x^2/(x^2+y^2))=0 AND (log(x^2+y^2)+2y^2/(x^2+y^2))=0
(log(x^2+y^2)+2x^2/(x^2+y^2))=0 AND (log(x^2+y^2)+2y^2/(x^2+y^2))=0
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