``` fsurf(@(x,y) y.*sin(x)-x.*cos(y),[-2*pi 2*pi]) title('ysin(x) - xcos(y) for x and y in [-2\pi,2\pi]') xlabel('x'); ylabel('y'); zlabel('z'); box on ax = gca; ax.XTick = -2*pi:pi/2:2*pi; ax.XTickLabel = {'-2\pi','-3\pi/2','-\pi','-\pi/2','0','\pi/2','\pi','3\pi/2','2\pi'}; ax.YTick = -2*pi:pi/2:2*pi; ax.YTickLabel = {'-2\pi','-3\pi/2','-\pi','-\pi/2','0','\pi/2','\pi','3\pi/2','2\pi'}; fig2plotly(gcf); ``` pi and "to the power of" are not displayed correctly.