Xy 4 x 2 y 2 8 July 8, 2019 16 32 64 128 Xy 4 0 x 2 y 2 8 5 Xy 2 4x 2y 2 8 Lim xy 4 x 2 y 8 F x y xy 4x 2 y 2 8 Prove that the curves xy 4 and x 2 y 2 8 4 x 2 + 8xy - 60y 2
