Writ(=' a MATLABrogram to find poles and zeros of z-domain signal, p ( to.8z+0.8)j(Z2+0.49), and sketch the pole zero plot.

( II'.J r all
. VIII Z
~

I1UII1(oeff=[1
0.8 0.8];
di .pC'Roots
of numerator
roots(num_coeff)
"ro~

dl'n coeff=[1
0 0.49];
di",pC'Roots
of
denominator
poll's roots(den_coeff)

II I f C ' z ' ) ;
I', 0.1;

II If C [num coeff]
lJ rid
on;
p 111 ( H) ;
,1P

OUTPUT

%find
polynomial

%fi nd
polynomial

the
factors
zA2+0.8z+0.8

the

factors
zA2+0.49

of zA2+0.8z+0.8
are
zeros.');

of
are

zA2+0.
poles.');

, [den_coeff]

,TS);

%pol e - z e r 0

p lot