% data for Exercise Set 6.4

ex = input('Exercise number (11-17)? ');
 
if ex==11
   A = [3 4;-1 -1], b1 = [2;-1], b2 = [1;2] 
elseif ex==12
   A = [-1 4;-2 3], b1 = [3;2], b2 = [-1;1] 
elseif ex==13
   A = [0 1;-3 4] 
elseif ex==14
   A = [5 -3;-7 1]  
elseif ex==15
   A = [4 -2;-1 3] 
elseif ex==16
   A = [4 6;-1 -1] 
elseif ex==17
   A = [1 1;-1 3], b1 = [1;1], b2 = [5;4] 
else
   disp('No data for this exercise in Section 6.4.')
end
