Exam Questions Papers - Engineering

Q1:

When x(n) is real then the Fourier series coefficients are correlated as __________ .

A a-k = ak*

B ak = ak*

C ak+1 = ak*

D a-k+1 = ak*

ANS:A - a-k = ak*

a-k = a*k for all values of k. In fact, this equality holds whenever x[n] is real.