Assuming that a signal is specified by the expression:
x[n] = 3.7cos\left(\frac{6\pi n}{13} + \frac{\pi}{3}\right)
What statement best describes the signal?
All other statements are incorrect.
The signal is a continuous-time sinusoid of frequency 6\pi/13 and phase of \pi/3.
The signal is a discrete-time periodic sinusoid with fundamental period 13 and
sampled with the sampling period of 6\pi, while not satisfying the Nyquist condition.
The signal is a discrete-time periodic sinusoid with fundamental period 13 and sampled
with the sampling period of 3, while satisfying the Nyquist condition.
The signal is a discrete-time periodic sinusoid with fundamental period 6\pi and sampled
with the sampling period of 3, while satisfying the Nyquist condition.
The signal is a discrete-time periodic sinusoid with fundamental period 13 and sampled
with the sampling period of 6, while not satisfying the Nyquist condition.
The signal is a discrete-time aperiodic sinusoid with fundamental period 13 and sampled
with the sampling period of 3, while satisfying the Nyquist condition.
The signal is a discrete-time periodic sinusoid with fundamental period 26 and sampled
with the sampling period of 3, while satisfying the Nyquist condition.