How do I plot z = sin(xy) for its graph and contour map

How do I plot z = sin(xy) for its graph and contour map

Answer 1

[Walter Roberson]

anglerange = linspace(-6*pi, 6*pi);
[x, y] = ndgrid(anglerange);

AT THIS POINT, INSERT THE CALCULATION FOR z.

z = ....

After that,

ax1 = subplot(2,2,1);
surf(ax1, x, y, z, 'edgecolor', 'none');
colormap(ax1, jet(256));
ax2 = subplot(2,2,[2 4]);
contour(ax2, x, y, z);
colormap(ax2, hsv(256));