How can I add x1 to x5 in a loop

 x(j)      = [zeros(t(j),1);x_m';zeros(t_max -t(j),1)];
       x1      =  x(:,1);
       x2      = x(:,2);
       x3      = x(:,3);
       x4      = x(:,4);
       x5      = x(:,5);
       y_m = x1+x2+x3+x4+x5;

Answer 1

[Dennis]

You can use sum() instead of manually adding x1 to x5.

y=zeros(length(t),5);
for j=1:length(t)
y_m(j,:)=sum(x);
end

However i don't think that your calculation of x(j) is going to work that way.