Determine whether or not each of the following continuous-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x(t) = 3 cos(4t + ) (c) x(t) = [cos(2t − )]² (e) _x(t) = &v{sin(4πt)u(t)} (b) x(t) = ei(m-1) (d) x(t) = &v{cos(4πt)u(t)} (f) x(t) = Σ e-(21-n) u (2t - n) 12=-0

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A b c needed

Determine whether or not each of the following continuous-time signals is periodic.
If the signal is periodic, determine its fundamental period.
(a) x(t) = 3 cos(4t + )
(c) x(t) = [cos(2t − )]²
(e) _x(t) = &v{sin(4πt)u(t)}
(b) x(t) = ei(m-1)
(d) x(t) = &v{cos(4πt)u(t)}
(f) x(t)
=
Σ e-(21-n) u (2t - n)
12=-0
Transcribed Image Text:Determine whether or not each of the following continuous-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x(t) = 3 cos(4t + ) (c) x(t) = [cos(2t − )]² (e) _x(t) = &v{sin(4πt)u(t)} (b) x(t) = ei(m-1) (d) x(t) = &v{cos(4πt)u(t)} (f) x(t) = Σ e-(21-n) u (2t - n) 12=-0
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