2. (5+5+5+5 points) Determine whether or not each of the following signals is periodic. If the signal is periodic, determine its fundamental period. (Even {f(t)} denotes the even part of f(t)) (a) x(t) = 3 cos 4t + π (b) x(t) = = Even {cos (4лt)u(t)} (c) x[n] = sin σπ ―n+1 1) (d) x[n] = cos (n) cos (n)

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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2. (5+5+5+5 points) Determine whether or not each of the following signals is periodic. If the
signal is periodic, determine its fundamental period. (Even {f(t)} denotes the even part of f(t))
(a) x(t) = 3 cos
4t +
π
(b) x(t) = = Even {cos (4лt)u(t)}
(c) x[n]
= sin
σπ
―n+1
1)
(d) x[n] = cos
(n) cos (n)
Transcribed Image Text:2. (5+5+5+5 points) Determine whether or not each of the following signals is periodic. If the signal is periodic, determine its fundamental period. (Even {f(t)} denotes the even part of f(t)) (a) x(t) = 3 cos 4t + π (b) x(t) = = Even {cos (4лt)u(t)} (c) x[n] = sin σπ ―n+1 1) (d) x[n] = cos (n) cos (n)
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