% data for Exercise Set 7.1

ex = input('Exercise number (1-16, 19-23)? ');

if ex==1
   u = [-1;2], v = [4;6]
elseif ex==2
   w = [3;-1;-5], x = [6;-2;3] 
elseif ex==3 | ex==9
   w = [3;-1;-5] 
elseif ex==4 | ex==7
   u = [-1;2] 
elseif ex==5
   u = [-1;2], v = [4;6]
elseif ex==6
   w = [3;-1;-5], x = [6;-2;3] 
elseif ex==8
   v = [4;6]
elseif ex==10
   x = [6;-2;3] 
elseif ex==11
   v = [-30;40] 
elseif ex==12
   v = [-6;4;-3] 
elseif ex==13
   v = [7/4;1/2;1] 
elseif ex==14
   v = [8/3;2] 
elseif ex==15
   x = [10;-3], y = [-1;-5] 
elseif ex==16
   u = [0;-5;2], z = [-4;-1;8] 
elseif ex==19
   a = [8;-5], b = [-2;-3] 
elseif ex==20
   u = [12;3;-5], v = [2;-3;3] 
elseif ex==21
   u = [3;2;-5;0], v = [-4;1;-2;6] 
elseif ex==22
   y = [-3;7;4;0], z = [1;-8;15;-7] 
elseif ex==23
   u = [2;-5;-1], v = [-7;-4;6] 
else
   disp('No data for this exercise in Section 7.1.')
end
