

MCQOPTIONS
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1. |
Consider the two continuous-time signals defined below:\({x_1}\left( t \right) = \left\{ {\begin{array}{*{20}{c}}{\left| t \right|, - 1 \le t \le 1\;}\\{0,\;otherwise\;}\end{array},} \right.{x_2}\left( t \right) = \left\{ {\begin{array}{*{20}{c}}{1 - \left| t \right|, - 1 \le t \le 1\;}\\{0,\;otherwise\;}\end{array}} \right.\)These signals are sampled with a sampling period of T = 0.25 seconds to obtain discrete time signals x1[n] and x2[n], respectively. Which one of the following statements is true? |
A. | The energy of x1[n] is greater than the energy of x2[n]. |
B. | The energy of x2[n] is greater than the energy of x2[n]. |
C. | x1[n] and x2 have equal energies. |
D. | Neither x1[n] nor x2[n] is a finite-energy signal. |
Answer» B. The energy of x2[n] is greater than the energy of x2[n]. | |