2. Determine the periodicity of each of the three discrete-time signals given below. If they are periodic, determine frequency coefficient k and the number of samples N in a period. a. x₁[n] = 5 cos(0.4лn +0.25π) b. x₂ [n] = 3 sin (n + ) if the signal is multi-tone periodic, need to find the individual k1 and k2 coefficients for the individual sine/cosine parts c. x3[n] = 2.5sin(0.375n) - 1.5sin (0.25mm - 0.125π)

Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
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2.
Determine the periodicity of each of the three discrete-time signals
given below. If they are periodic, determine frequency coefficient k and the number of
samples N in a period.
a. x₁[n] = 5 cos(0.4лn + 0.25π)
b. x₂[n] = 3 sin
²n + ²/1)
6π
17
if the signal is multi-tone periodic,
need to find the individual k1 and
k2 coefficients for the individual
sine/cosine parts
c. x3[n] = 2.5sin (0.375nn) - 1.5sin (0.25лn - 0.125π)
Transcribed Image Text:2. Determine the periodicity of each of the three discrete-time signals given below. If they are periodic, determine frequency coefficient k and the number of samples N in a period. a. x₁[n] = 5 cos(0.4лn + 0.25π) b. x₂[n] = 3 sin ²n + ²/1) 6π 17 if the signal is multi-tone periodic, need to find the individual k1 and k2 coefficients for the individual sine/cosine parts c. x3[n] = 2.5sin (0.375nn) - 1.5sin (0.25лn - 0.125π)
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