Find the fundamental period of each these functions.
(a) g [n] = cos (2?n/10)
(b) g [n] = cos (?n/10) = cos (2?n/20)
(c) g [n] = cos (2?n/5) + cos (2?n/7)
(d) g [n] = e j2?n/20 + e ?j2?n/20
(e) g [n] = e ?j2?n/3 + e ?j2?n/4
(f) g [n] = sin (13?n/8) ? cos (9?n/6) = sin (2 × 13?n/16) ? cos (2 × 3?n/4)
(g) g [n] = e ?j6?n/21 + cos (22?n/36) ? sin (11?n/33)
Answers: 20, 10, 20, 12, 252, 35, 16
Solution:
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