If x(n) and X(k) are an N-point DFT pair, then X(k+N)=?Select one:a. X(k)b. X(-k)c. None of the mentionedd. -X(k)

If x(n) and X(k) are an N-point DFT pair, then X(k+N)=?Select one:a. X(k)b. X(-k)c. None of the mentionedd. -X(k)

If X(k) is the N-point DFT of a sequence x(n), then what is the DFT of x*(n)?Select one:1. X(N-k)2. None of the mentioned3. X*(k)4. X*(N-k)

How many complex multiplications are need to be performed for each FFT algorithm?Select one:a. (N/2)log2Nb. Nlog2Nc. None of the mentionedd. (N/2)logN

if a speech signal ranging from 300-3400Hz is sampled, then fs will be Select one:a. none of the valuesb. 600hzc. 6800Hz

f x is a binomial random variable with n=10 and p=0.8, what is the probability that x is equal to 4?Select one:a..0055.b..0063.c..124.d..232.e..994.