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2. Let the difference equation y(n)= -0.3y(n-1)+ 0.18y(n-2)+x(n-1) = x(n) correspond to a causal LTI system. a. Is the system stable? b. Draw a
2. Let the difference equation y(n)= -0.3y(n-1)+ 0.18y(n-2)+x(n-1) = x(n) correspond to a causal LTI system. a. Is the system stable? b. Draw a signal flow graph (SFG) of the system. c. Find the transfer function H(z) of the system. 3. Find a matrix representation of the SFG obtained in question 2.
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