3-consider f(z, y) = z°|y|. prove that f satisfies a lipschitz condition on r: lz| 2, 1y| s2 even thoigh a dose not exist at (r, 0) if r #0.

3-Consider f(z, y) = z°|y|. Prove that f satisfies a Lipschitz condition on R: lz| 2, 1y| S2 even thoigh a dose not exist at (r, 0) if r #0.