% lect11_2: Example of mesh and surface plots

% Step 1: Make the grid
x = -1:3;
y = 1:4;
[X, Y] = meshgrid(x, y);

% Step 2: Find the z values
Z = X.*Y.^2./(X.^2 + Y.^2);

% Step 3: Draw the plots
mesh(X, Y, Z)
% surf(X, Y, Z)
xlabel('x'); ylabel('y'); zlabel('z');