1.

Which of the following is the rational system function of an LTI system characterized by the difference equation y(n)=- ( sum_{k=1}^N a_k y(n-k)+ sum_{k=0}^N b_k x(n-k) )?

A. ( frac{ sum_{k=0}^N b_k x(n-k)}{1+ sum_{k=0}^N a_k y(n-k)} )
B. ( frac{1+ sum_{k=1}^N a_k y(n-k)}{ sum_{k=0}^N b_k x(n-k)} )
C. ( frac{ sum_{k=0}^N b_k x(n-k)}{1+ sum_{k=1}^N a_k y(n-k)} )
D. ( frac{1+ sum_{k=0}^N a_k y(n-k)}{ sum_{k=0}^N b_k x(n-k)} )
Answer» D. ( frac{1+ sum_{k=0}^N a_k y(n-k)}{ sum_{k=0}^N b_k x(n-k)} )


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