An analog signal
![720_e637f844-f108-45d7-a13e-dbba2dd1515a.png](https://secure.tutorsglobe.com/CMSImages/720_e637f844-f108-45d7-a13e-dbba2dd1515a.png)
is sampled 600 times per second.
(a) Determine the Nvquist sampling rate for xa(t).
(b) Determine the folding frequency.
(c) What are the frequencies, in radians, in the resulting discrete time signal x (n)?
(d) If is passed through an ideal D/A converter, what is the reconstructed signal xa(t)?