Question

. 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, ...}

          . 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, ...}

. Find the sequences whose z-transform is given above its ROC is in the range of
|1|<|z|<|2|
X(z) = (1 - 4z^-1)/(1 - 3z^-1 + 2z^-2)
Select one:
? a. None
O b. 3 · 1^n u(n) + 2 · 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, ...

Added by Olivia A.

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