MATLAB: Suming vectors which are produced in a loop

Question

Say I have a loop which returns three vectors:

for i = 1:3

V = [i; 2*i; 3*i];

end

returning

V = [1; 2; 3] V = [2; 4; 6] V = [3; 6; 9]

how do i then sum these to get

sumV = [1+2+3; 2+4+6; 3+6+9]

Answer 1

n=3;
sumV=zeros(n,1);
for i = 1:n
   V = [i; 2*i; 3*i];
   sumV(i,1)=sum(V,1);
end