% data for Exercise Set 1.3

ex = input('Exercise number (5-14)? ');
    
if ex==5
   disp ('5I + 7I = 12 + 6') 
elseif ex==6
   disp ('3I + 5I = 15 + 5')     
elseif ex==7    
   M = [1 -1 1 0;6 2 0 0;0 2 3 18]    
elseif ex==8    
   M = [1 -1 1 0;8 0 0 24;0 0 6 24] 
elseif ex==9    
   M = [1 1 -1 0;5 -5 0 5;0 5 5 35] 
elseif ex==10
   M = [1 -1 1 0;5 5 0 30;0 5 0 10] 
elseif ex==11
   M = [.8 -.7 0;-.8 .7 0]           
elseif ex==12    
   M = [1 -.4 -.6 0;-.6 .9 -.2 0;-.4 -.5 .8 0] 
elseif ex==13
   M = [.8 -.8 -.4 0; -.3 .9 -.4 0;-.5 -.1 .8 0]
elseif ex==14
   M = [.35 -.2 -.2 0;-.05 .9 -.3 0;-.3 -.7 .5 0]
else
  disp('No data for this exercise in Section 1.3.') 
end
