Example 9.15 (b).  Use z-transform methods to solve     with  .  

Explore Solution 9.15 (b).

It is worthwhile to point out how Mathematica can do the important step using residues.

    To solve     with  ,  we will use our Mathematica subroutine    for finding the solution to  .   It will take the z-transforms of each term;  solve for  ;  and it's inverse .   The format of the subroutine call is     with    and  .

(c) 2006 John H. Mathews, Russell W. Howell