For the signal, x(t) = log(cos(a*pi*t+d)) for a = 50 Hz, what is the time period of the signal, if periodic?
(a) 0.16s
(b) 0.08s
(c) 0.12s
(d) 0.04s
The question was asked in unit test.
The origin of the question is Signal Classification and Properties topic in chapter Signals and Systems Basics of Signals and Systems