e251.m

matlab算法集 matlab算法集

%-----------------------------------------------------------------------
% Example 2.5.1 Ill Conditioning
%-----------------------------------------------------------------------
   clc                 
   clear
   fprintf ('Example 2.5.1: Ill Conditioning\n')
   A = [100 -200 ; -200 401];
   b = [100 ; -100];
   show ('A',A)
   show ('b',b)
   disp('Ax = b where:')
   show ('x',A\b)
   A = [101 -200 ; -200 400];
   show ('new A',A)
   show ('new x',A\b)
%-----------------------------------------------------------------------