Problem 7.2 --joshua.c.udoma.1, Fri, 23 Nov 2007 12:57:31

I was reviewing for this exam and I came across problem 7.2 again. In the problem, book uses "$ \omega_c\ $". In the solutions on the website there is an "$ \omega_0\ $" used. Can someone tell me what $ \omega_c\ $/$ \omega_0\ $ is and how it relates to the sampling frequency and $ \omega_m\ $. Thanks!