Yesterday I switched my browser from Chromium to Firefox and when I try to use plot3d()
the output shows no graph.
f(x,y) = x^2 + y^2 - x*y
plot3d(f,(x,-8,8),(y,-8,8))
Everything is white where the graph should be. I do see the small i
at the bottom right of the window, but nothing else. Am I doing something wrong here?