Ctrl+C, Ctrl+v пост в строку поиска google, на выходе красивый график: 5 + (-sqrt(1-x^2-(y-abs(x))^2))*sin(100*((10-x^2-(y-abs(x))^2))), x is from -1 to 1, y is from -1 to 1.5, z is from 1 to 6