
 a) Verify with numeric applications, 
    the properties of matrix arithmetic. 
    
 b) This is also an example of the use of the fonctions, 
    I have write.

 c) See your textbook, or ask to your teacher, if you do
    not know how to do the operations.
 
    Try the examples in this order.


        paF.exe,     paI.exe  :      A+B = B+A          
        pbF.exe,     pbI.exe  :  (A+B)+C = A+(B+C)
        pcF.exe,     pcI.exe  :    (AB)C = A(BC)
        pdF.exe,     pdI.exe  :   A(B+C) = AB+AC
        peF.exe,     peI.exe      (B+C)A = BA+CA
        pfF.exe,     pfI.exe  :   A(B-C) = AB-AC
        pgF.exe,     pgI.exe  :   (B-C)A = BA-CA
        phF.exe,     phI.exe  :   a(B+C) = aB+aC
        piF.exe,     piI.exe  :   a(B-C) = aB-aC
        pjF.exe,     pjI.exe  :   (a+b)C = aC+bC
        pkF.exe,     pkI.exe  :   (a-b)C = aC-bC
        plF.exe,     plI.exe  :    a(bC) = (ab)C
                                           
          