
 a) You can play with these programs to improve your ability,
    to do additions, subtractions, multiplication, with 
    integers, and fractions.
 
    
 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.
                                                                  
               All the programs :
               ================

      a) aplsbi.exe : A + B           (coefficients integer ) 
         aplsbf.exe : A + B           (coefficients fraction)

      b) apmnsi.exe : A - B           (coefficients integer )
         apmnsf.exe : A - B           (coefficients fraction)

      c)    abi.exe : AB              (coefficients integer )
            abf.exe : AB              (coefficients fraction)

      d) tracei.exe : trace(A)        (coefficients integer )
         tracef.exe : trace(A)        (coefficients fraction)

      e)   invi.exe : inverse(A)      (coefficients integer )
           invf.exe : inverse(A)      (coefficients fraction)

      f)    gji.exe : gaussjourdan(A) (coefficients integer )
            gjf.exe : gaussjourdan(A) (coefficients fraction)

