[x,y] = meshgrid(-8:0.5:8);z = sin(sqrt(x.^2+y.^2))./sqrt(x.^2+y.^2+eps);subplot(2,2,1);mesh(x,y,z);title(‘mesh(x,y,z)‘);subplot(2,2,2);meshc(x,y,z);title(‘meshc(x,y,z)‘);subplot(2,2,3);meshz(x,y,z)title(‘meshz(x,y,z)‘);subplot(2,2,4);surf(x,y,z)title(‘surf(x,y,z)‘);