Hello everybody, In the context of DFT, I am given an 8-point signal x[n] with the 8-point DFT of X[k]. What is the IDFT of the sequence X[2k], for k=0-3? I 've been trying to find a formal answer specifically for the DFT all day but to no avail. Can you point me to a resource or provide an answer? A proof would be even better. Thanks in advance.