How can I compute the following formular recursive ?

x1=b(1)+ b(2)*x0+resrd2(1,:);  % b1 and b2 are scalars x(0) also resrd2 is a matrix of 743x1
x2=b(1)+ b(2)*x1+resrd2(2,:);
x3=b(1)+ b(2)*x2+resrd2(3,:);

How can I solve this ? My Problem here is, that the x values should change recursively and that I want to get the fitting values from the resrd2. In the end the goal is to get a matrix of 743x1. Can somebody please help me here ?

[John D'Errico]

What was inadeaqaute about the answers you got the last time you asked this question?

[Fox]

Problem is that I've now the resrd in addition and it doesn't work with the structure before. I've the formular to solve the problem without resrd.

xm = a*(1-b.^m)/(1-b) + b.^m*xx0;
When I've now the resrd, I can transform this to:

for i=1:743
xx=a+resrd(i,:);
xm = xx*(1-b.^m)/(1-b) + b.^m*xx0;
end

However my solutions are wrong. You know a way how to fix this or another approach to solve this problem ?

[Pavithra Ashok Kumar]

 %Call this function with x(n)

 function out = x(index)
  if index == 1
  return x(0);
  else
  out = a+b*x(index-1) + resrd(index-1);
  end

Collecting the out values will give the array you are looking for. Hope this helps.