% 
% Written by:
% -- 
% John L. Weatherwax                2007-07-01
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
%-----

% Solve each system one at a time: 
%
[ 2 0; 4 1 ] \ [ 2 ; 1 ] % x_1 = x_2 = 0 

[ 1 2; 0 4 ] \ [ 2 ; 1 ] % x_1 = x_4 = 0 

[ 1 0; 2 1 ] \ [ 2 ; 1 ] % x_2 = x_3 = 0 

[ 1 2; 2 4 ] \ [ 2 ; 1 ] % x_2 = x_4 = 0 

[ 1 1; 2 0 ] \ [ 2 ; 1 ] % x_3 = x_4 = 0 

[ 0, 0, 0.5; 2, 1.5, 1.5; 0, 0.25, 0; 1, 0, 0 ].' * [ 2; -1; 1; 3 ]