14-2 Limits and Continuity.sagews

var('y')
plot3d(x*y/(x^2 + y^2), (x, -1, 1), (y, -1, 1), plot_points = 100)

y

3D rendering not yet implemented

contour_plot(x*y/(x^2 + y^2), (x, -1, 1), (y, -1, 1), contours = 20)

plot3d(x*y^2/(x^2 + y^4), (x, -1, 1), (y, -1, 1), plot_points =400)
contour_plot(x*y^2/(x^2 + y^4), (x, -1, 1), (y, -1, 1), contours = 20)

3D rendering not yet implemented

plot3d(x^2/(x^2 + y^2), (x, -1, 1), (y, -1, 1), plot_points = 100)
contour_plot(x^2/(x^2 + y^2), (x, -1, 1), (y, -1, 1), contours = 20)
︠bf2906bc-8afc-443f-8f6f-f8cbbd9e48c4︠
# 13
plot3d(x*y/sqrt(x^2 + y^2), (x, -1, 1), (y, -1, 1), plot_points = 100)
contour_plot(x*y/sqrt(x^2 + y^2), (x, -1, 1), (y, -1, 1), contours = 20)