% this requires a special function created by  Shawn Arseneau
%  see  http://www.mathworks.com/matlabcentral/fileexchange/12274 

 
 arrow3([0,0,0], [1,0,0],'yellow');
 arrow3([0,0,0], [0,1,0],'yellow');
 arrow3([0,0,0], [0,0,1],'magenta');    % this plots the i,j,k, vectors
     
 plot3([-2,-2,5], [-2,5,-2], [5,-2,-2],'*w')   % this sets the window of specified size
 
 a = [1,2,3];
 b = [ 4,5,6];
 o = [0,0,0];
 
  arrow3(o,a,'red');
  arrow3(o,b,'green');
  
  axb = cross(a,b);
  arrow3(o,axb,'black');