1.

The Fourier series coefficient of time domain signal x (t) is X[k] = ((- frac{1}{3})^{|k|} ). The fundamental frequency of signal is =1. The signal is _____________

A. ( frac{4}{5 + 3 sin u2061} )
B. ( frac{5}{4 + 3 sin u2061t} )
C. ( frac{5}{4 + 3 cos u2061t} )
D. ( frac{4}{5 + 3 sin u2061t} )
Answer» E.


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