If x(n) is real and even, then what is the DFT of x(n)?
Posted: Thu Jul 14, 2022 9:44 am
a) \(\sum_{n=0}^{N-1} x(n) sin\frac{2πkn}{N}\)
b) \(\sum_{n=0}^{N-1} x(n) cos\frac{2πkn}{N}\)
c) -j\(\sum_{n=0}^{N-1} x(n) sin\frac{2πkn}{N}\)
d) None of the mentioned
b) \(\sum_{n=0}^{N-1} x(n) cos\frac{2πkn}{N}\)
c) -j\(\sum_{n=0}^{N-1} x(n) sin\frac{2πkn}{N}\)
d) None of the mentioned