% 
% Written by:
% -- 
% John L. Weatherwax                2007-04-02
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
%-----

clc; close all; 

figure; grid on; a=1;
patch( [0,0,a,a], [10,0,0,10], 'k' ); 
patch( [0,0,10,10], [a,0,0,a], 'k' );
xlabel( 'x' ); ylabel( 'y' ); 
axis( [0,6,0,6] ); 
saveas( gcf, '../WriteUp/Graphics/Chapter4/prob_22', 'epsc' );