Question 15
A table was constructed with the results of calculations for h(n) for 3 different analytical methods and for the computer simulation, as well as the residue method and the Inverse Discrete fourier Transform method.. The entries for partial fractions, long division and quadratic factors were calculated by hand while the computer simulation was done by Excel.
Computer Simulation 
Partial Fractions 
Long Division 
Quadratic Factors 
IDFT

Residues


N 
x(n) 
y(n) 
y(n) 
y(n) 
y(n) 
y(n)  y(t) 
2 
0 

1 
0 

0 
1 
0.16220 
0.16220 
0.16220 
0.16217 
0.1623  0.16217 
1 
0 
0.00000 
0 
0 
0 
0  0 
2 
0 
0.27169 
0.27175 
0.27170 
0.27174 
0.2720  0.27174 
3 
0 
0.00000 
0 
0 
0 
0  0 