The Nth root of unity WN is given as:
A. ej2pN
B. e-j2pN
C. e-j2p/N
D. ej2p/N
Answer:C
The Nth root of unity WN is given as:
A. ej2pN B. e-j2pN C. e-j2p/N D. ej2p/N
Explanation: We know that the Discrete Fourier transform of a signal x(n) is given as