Let x(t) = 7 sin(11πt) In each of the following parts, the discrete-time signalx[n] is obt...

Let x(t) = 7 sin(11πt) In each of the following parts, the discrete-time signalx[n] is obtained by sampling x(t) at a rate fs, and the resultant x[n] can be written as

For each part below, determine the values of A, ϕ, and . In addition, state whether or not the signal has been over-sampled or under-sampled.

(a) Sampling frequency is fs = 10 samples/sec.

(b) Sampling frequency is fs = 5 samples/sec.

(c) Sampling frequency is fs= 15 samples/sec.