engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Signals and Systems Discrete Time Signals and Systems
A discrete-time signal is given as
\(x\left[ n \right] = \cos \frac{{\pi n}}{9} + \sin \left[ {\frac{{\pi n}}{7} + \frac{1}{2}} \right]\)
The period N for the periodic signal is1
126
2
32
3
252
4
64