Which of the following signals are periodic and which are aperiodic? Find the periods of those that

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Which of the following signals are periodic and which are aperiodic? Find the periods of those that are periodic. Sketch all signals.

(a) x_a (t) = cos (5Ï€t) + sin (7Ï€t)

(b)

(c)

(d) x_d (t) = sin(3t) + cos (2Ï€t)

(e)

(f)

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Principles of Communications Systems, Modulation and Noise

ISBN: 978-8126556793

7th edition

Authors: Rodger E. Ziemer, William H. Tranter

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Question Posted: Sep 13, 2018 11:41 AM

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Which of the following signals are periodic and which are aperiodic? Find the periods of those that

Question:

X, (t) = E, A(t – 2n) 00 %3D n=0 |x, () Σ-_ Λ-2n) 00 In=-00

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a c and e are periodic Their periods are 2 s fundamental fr...View the full answer

Principles of Communications Systems, Modulation and Noise

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