Concatenate arrays calculated by for loop

I have a 3x540 matrix (mt) and want to process each column through the following for loop to calculate 540 3 x1 arrays (x)

for i=0:539

A = [T-n, -n.*P, mt(:,1+i).*P];

b = [mt(:,1+i)-n];

x = inv(A)*b

end

How do I concatenate the 540 'x' arrays into a single 3x540 matrix?

Answer 1

[KSSV]

x = zeros(3,540) ; 
for i=0:539
    A = [T-n, -n.*P, mt(:,1+i).*P];
    b = [mt(:,1+i)-n];
    x(:,i+1) = inv(A)*b ;
end

[Luke Bridgestock]

Thanks!