disp('>> % 	VECTORS');     % 	VECTORS     GAfigure; clc; %/     disp('>> % 	VECTORS');     % 	VECTORS     global v w; %/     clf; %/     disp('>> %	Vectors can be defined using coordinates:');     %	Vectors can be defined using coordinates:     disp('>> v = e1 + e2;');     v = e1 + e2;     disp('>> w = e2 + 2*e3;');     w = e2 + 2*e3;     disp('>> draw(v,''b'');');     draw(v,'b');     GAtext(0.5*v -0.1*unit(w),'v'); %/     disp('>> draw(w,''g'');');     draw(w,'g');     GAtext(0.5*w-0.1*unit(v),'w'); %/      axis('vis3d'); %/     va = [-0.1 1 0 2 -0.1 2]; %/     axis(va); %/     GAprompt; %/     GAorbiter(60,6); %/     GAprompt; %/     disp('>> % 	Adding vectors, as usual:');     % 	Adding vectors, as usual:     disp('>> v+w');     v+w     draw(v+w,'r'); %/     GAtext(0.7*(v+w) -0.1*unit(w),'v+w'); %/     DrawPolyline({v,v+w},'k'); %/     DrawPolyline({w,v+w},'k'); %/     disp('>> % 	But vector addition is coordinate-free,');     % 	But vector addition is coordinate-free,     disp('>> %	so we will drop the axes.');     %	so we will drop the axes.     axis(va); %/     GAprompt; %/     axis off; %/     GAprompt; %/     disp('>> %	Vectors `are'' geometrical objects in space.');     %	Vectors `are' geometrical objects in space.     GAorbiter(360,10); %/