The Nth rot of unity WN is given as:
A. ej2πN
B. e -j2πN
C. e-j2π/N
D. ej2π/N
Answer:A
The Nth rot of unity WN is given as:
A. ej2πN B. e -j2πN C. e-j2π/N D. ej2π/N
Explanation: We know that the Discrete Fourier transform of a signal x(n) is given as