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1. The ROC of sequence x[n] = (0.8)n ∪[n] + (0.4)n ∪[n]





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  • By: guest on 02 Jun 2017 01.13 am
    ROC ⇒ 1 - 0.8 z-1 < 0 1 - 0.4 z-1 ⇒ 1 > 0.8 z-1 ⇒ z > 0.4 or z > 0.8 By combining both condition ROC because z > 0.4 If you consider z > 0.8 then ROC between the limit 0 to 0.4 excluded.
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