MATLAB: Assignment has more non-singleton rhs dimensions than non-singleton subscripts ERROR IN FOR LOOP

rhs in for loop

hi every one
I have written this code But the error is showen
clear,clc
N = 5;
A = eye(6);
B = zeros(6,3);
u = zeros(3,N)
x = zeros(6,N); x(:,1)=[1;1;1;1;1;1];
for i=1:N
x(:,i+1)=x(:,i)+A*x(:,i)+B*u(i);
end
Assignment has more non-singleton rhs dimensions than non-singleton subscripts

Best Answer

x(:,i+1)=x(:,i)+A*x(:,i)+B*u(:,i); % changed u(i) to u(:,i)