Question: Indicate which of the following discrete-time signals are eigenfunctions of stable, linear time-invariant discrete-time systems: (a) e j2n/3 (b) 3 n (c) 2 n u[

Indicate which of the following discrete-time signals are eigenfunctions of stable, linear time-invariant discrete-time systems:

(a) ej2πn/3

(b) 3n

(c) 2nu[– n –1]

(d) Cos(ω0n)

(e) (1/4)n

(f) (1/4)n u[n] + 4nu[– n – 1]

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