www.pudn.com > calibr8.zip > initill.m

function x=initill(n) 
% Usage: 
% x=initill(n) 
% Sets the global constant matrices and vectors of the dimension  
% and returns the standard starting point  
% for the Ill-conditioned Linear Programming problem. 
global matrA vectB vectC 
vectB=[]; vectC=[]; matrA=[];   
  for i=1:n, 
    x(i)=0;     vectB(i)=0; 
    for j=1:n 
       matrA(i,j)=1/(i+j);       vectB(i)=vectB(i)+1/(i+j); 
    end 
    vectC(i)=-1/(i+1)-vectB(i); 
  end 
  vectB=vectB';    vectC=vectC';  x=x';