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Z transform and its Application on Digital Signal Processing related Questions and Answers


Question :   A linear time invariant system is characterized by the system function H(z)=1/(1-0.5z-1 )+2/(1-3z-1 ).What is the ROC of H(z) if the system is causal?
1. |z|<3
2. |z|>3
3. |z|<0.5
4. |z|>0.5
Answer :   2 - |z|>3  

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