Consider the system shown in Figure. For each of the following input signals x[n], indicate whether...

Question

Consider the system shown in Figure. For each of the following input signals x[n], indicate whether the output xr[n] = x[n].
(a) x[n] = cos(p n/4)
(b) x[n] = cos(p n/2)
(c)

David · Accepted Answer

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sin 4
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sin
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k
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k
x t t k
k
t
x t t k
t
Therefore g t t k
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ce g t is an impulse train its F
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       .

Consider the system shown in Figure. For each of the following input signals x[n], indicate whether the output xr[n] = x[n]. (a) x[n] = cos(p n/4) (b) x[n] = cos(p n/2) (c)

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