Determine the values of P x and Ex for each of the following signals: (a) x 1 (t) = e- 21 u(t)
"x_1(t)=e^{-2t}u(t)"
"t=\\infin \\implies x_1(t)=0 \\implies" It is energy signal
Therefore, Power , Px=0
Energy , "Ex=\\lim\\limits_{t\\to \\infin} \\int_0^t(e^{-2t})^2dt=\\lim\\limits_{t\\to \\infin} \\frac{e^{-ut}}{-u}|_0^t=\\frac{1}{4}J"
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