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Nischal
Guest
Je x [n] = cos [(pi * n ^ 2) / 8] periodickej. Ak áno, nájdete jeho obdobie danej odpoveď je: periodické. obdobie = 8 Ako tento problém vyriešiť?
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S
sundarmeenakshi
Guest
[Quote = Nischal] je x [n] = cos [(pi * n ^ 2) / 8] periodickej. Ak áno, nájdete jeho obdobie danej odpoveď je: periodické. obdobie = 8 Ako tento problém vyriešiť? [/quote] Pretože ω = 2Πf predpokladať, signál je cos WN, takže f = 1 / 8, pretože f je vyjadrená ako pomer 2 inteer takže je periadic máme podmienku periodicity f = K / N, kde N je zásadný obdobie v našom prípade je to 8.
N
Nischal
Guest
Ospravedlňujeme sa za nejasnosti v otázke otázkou nie je, ale coswn cos (pi * n ^ 2 / 8) .. tu n ^ 2 -> n na druhú
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derek122
Guest
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