橘露源的博客

x = -5:0.01:15; y = 4:0.01:6; [x1, y1] = meshgrid(x, y); z = 21.5 + x1.*sin(4*pi*x1) + y1.*sin(20*pi*y1); plot3(x1, y1, z) x = 11:0.001:12; y = 5.5:0.001:5.8; [x1, y1] = meshgrid(x, y); z = 21.5 + x...