Given the DT system: y[n] - 0.6y[n-1] + 0.08y[n-2] = 4x[n]
28.
(4') Find its transfer function H(z).
$\frac{4}{z^2 - 0.6z + 0.08}$
a. $H(z) = $
$\frac{4z^2}{z^2 + 0.08z - 0.6}$
b. $H(z) = $
$\frac{4z^2}{z^2 - 0.6z + 0.08}$
c. $H(z) = $
d. other
29.
(4') What is its impulse response h[n]?
a. $h[n] = (8(0.4)^n - 4(0.2)^n)u[n]$
b. $8(0.4)^n - 4(0.2)^n$
c. $h[n] = 8(-0.4)^n - 4(0.2)^n$
d. other
30.
(2') Is the above system stable?
a. Yes, it is stable. b. No, it is unstable.