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Question Number 202771 by ali009 last updated on 03/Jan/24
determinewhetherthissignalisperiodicornotifit′speriodicspecifyit′sfaundemwntalperiody(n)=cos(n8)cos(nπ8)
Answered by Frix last updated on 03/Jan/24
It′snotperiodic.Toseewhathappens:π≈3cosn8cos3n8⇒periodis8ππ≈227cosn8cos11n28⇒periodis112ππ≈355113cosn8cos355n904⇒periodis904π...cosn8cosnπ8⇒periodis∞
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