1.6 The following problems are about energy and power of signals. (a) Plot the signal x (t) = e-tu(t) and determine its energy. What is the power of x (1)? (b) How does the energy of z(t) = e-, -∞ 0,...

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Extracted text: 1.6 The following problems are about energy and power of signals. (a) Plot the signal x (t) = e-tu(t) and determine its energy. What is the power of x (1)? (b) How does the energy of z(t) = e-, -∞ < t=""><∞, compare="" to="" the="" energy="" of="" zi(t)="e-'u(t)?" carefully="" plot="" the="" two="" signals.="" (c)="" consider="" the="" signal="" y(1)="sign[v;(1)]" =="" {="" _h="" x¡="" (1)=""> 0, X; (1) < 0,="" for="" -o=""><∞, i="1," 2.="" find="" the="" energy="" and="" the="" power="" of="" y(t)="" when="" (a)="" x1(t)="cos(271)," (b)="" x2(t)="sin(271)." plot="" y(t)="" in="" each="" case.="" (d)="" given="" v(t)="cos(t)" +="" cos(2t).="" i.="" compute="" the="" ii.="" determine="" the="" power="" of="" each="" of="" the="" components="" of="" v(t),="" add="" them,="" and="" compare="" the="" power="" of="" v(t).="" result="" to="" the="" power="" of="" v(t).="" (e)="" find="" the="" power="" of="" s(t)="cos(271)" and="" of="" f(1)="s(1)u(t)." how="" do="" they="" compare?="" answer:="" (a)="" ex="0.5;" (b)="" ez="2Ez¡;" (c)="" py="1;" (d)="" p,="">