Find The Maximum And Minimum Values Attained By F X Y Z Quizlet There is no fundamental solution with $x^2 y^2 z^2 = 2 xyz,$ and no solutions In case of interest, see https//mathoverflownet/questions//conjectureonmarkovhurwitzZ = xye^xy 3xy^3, partial differentialz/partial differentialy x^2 y^2 z^2 4xyz = 1, partial differentialz/partial differentialx This problem has been solved! Y2 4x x 0 to x 4