Draw the locus of points $ M(x,y)$ in the Cartesian plane $ xOy$ satisfying $ (x^2-1)(|y|-1) \ge 0$.
Source: Ukraine 2005 grade 9
Tags: geometry unsolved, geometry
Draw the locus of points $ M(x,y)$ in the Cartesian plane $ xOy$ satisfying $ (x^2-1)(|y|-1) \ge 0$.