. Find the sequences whose z-transform is given above & its ROC is in the range of
|1|<|z|<|2|
X(z) = \frac{1 - 4z^{-1}}{1 - 3z^{-1} + 2z^{-2}}
Select one:
? a. None
O b. $3 \cdot 1^n u(n) + 2 \cdot 2^n u(-n - 1)$
? c. $(3 - 2^{n+1}) u(n)$
O d. $(-3 + 2^{n+1}) u(-n - 1)$
Consider the causal LTI system with difference equation
y[n] = 0.5y[n-1] + u[n] + 2u[n-1]
What is the impulse response h of the system?
Select one:
? a. h = {...,0,0,1,2,...}
O b. h = {...,0,0,1, 2.5, 1.25, 0.625, ...}
O c. h = {...,0,1, 2.5, 1.25, 0.625, ...}
O d. h = {...,0,1, 3.5, 1.75, 0.8525, ...}