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 is

A discrete-time signal is given as\(x\left[ n \right] = \cos \frac{{\p

1.	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 is
A.	126
B.	32
C.	252
D.	64
Answer» B. 32