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Unformatted text preview: x[n] = (1/2)^n u[n] a) DTFT b) DTFS c) CTFS d) CTFT Solution : The signal is discrete and aperiodic so it must be analyzed with the DTFT. 4. Identify the appropriate Fourier representation for the following signal: x[n] = (j)^n where j^2 = -1 a) DTFT b) DTFS c) CTFS d) CTFT Solution: The signal is discrete and periodic (with N = 4) so it should be analyzed with the DTFS. 5. The DTFS and DTFT of a periodic DT signal have the same representation. Solution: True 6. The spectrum of a signal is measured and found to be continuous. The signal MUST be CT. Solution: False...
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- Spring '11