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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)} ) | |