MATLAB: How to vectorize the following code snippet

Question

x = -1.0:0.2:1.0;

y = -2:0.25:3;

length_x = length(x);

length_y = length(y);

for nx=1:length_x

for ny=1:length_y

result(nx, ny) = exp(x(nx)^2-y(ny)^2);

end

end

Answer 1

x = -1.0:0.2:1.0;
y = -2:0.25:3;
[X,Y] = meshgrid(x,y) ; 
result = exp(X.^2-Y.^2);