The phase function of a discrete time signal x(n)=an, where a=r.ejθ is:
A. tan(nθ)
B. nθ
C. tan-1(nθ)
D. None of the mentioned
Answer:A
The phase function of a discrete time signal x(n)=an, where a=r.ejθ is:
A. tan(nθ) B. nθ C. tan-1(nθ) D. None of the mentioned
Explanation: Given x(n)=an=(r.ejθ)n =rn.ejnθ