Part A
Given the CT periodic signal x(t) = 2sin(t) - cos(t) because it repeats every $ 2\pi $
The signal is not periodic though when in DT (x[t] = 2sin(t) - cos(t)) --> there is no integer N which makes x[n] = x[n + N] true
Given the CT periodic signal x(t) = 2sin(t) - cos(t) because it repeats every $ 2\pi $
The signal is not periodic though when in DT (x[t] = 2sin(t) - cos(t)) --> there is no integer N which makes x[n] = x[n + N] true