Below is a graph of some samples taken from a sinusoid.
(a) What is the sampling rate f s ?
(b) If these samples have been taken properly (according to Shannon’s sampling theorem), what is the fundamental frequency f 0 of the sinusoid?
(c) The sinusoid from which the samples came can be expressed in the form A cos (2? f 0 t) . What is the numerical value of A?
(d) Specify the fundamental frequencies f 01 and f 02 of two other cosines of the same amplitude which, when sampled at the same rate, would yield the same set of samples.
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