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Determine whether or not each of the following continuous-time signals is periodic. If
Chapter 1, Problem 1.25(choose chapter or problem)
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) = 3cos(4t+ }) (b) x(t) = ei(7Tf-l) (c) x(t) = [cos(2t- })f (d) x(t) = 8v{cos(47Tt)u(t)} (e) x(t) = 8v{sin(47Tt)u(t)} (f) x(t) = L e-<2t-n) u(2t - n) n= -oo
Questions & Answers
QUESTION:
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) = 3cos(4t+ }) (b) x(t) = ei(7Tf-l) (c) x(t) = [cos(2t- })f (d) x(t) = 8v{cos(47Tt)u(t)} (e) x(t) = 8v{sin(47Tt)u(t)} (f) x(t) = L e-<2t-n) u(2t - n) n= -oo
ANSWER:Step 1 of 10
(a)
The signal is given as,
Compare the above equation with .
The angular frequency is,