Wiley signals and systems e book TLFe BO 544

Apperidix A Solutioris to t,lir Exerriscs + y[3] = - ( - ) y[4] (-4) ’ + - 529 = -4 : g[k] ( 1)A ( k 4l)&!k] b) y[k] = 1,- , > - , , - Solution 14.4 y[k] = J [ k ]- g[1, - !),a]= = ~ y[O] 21 y 31 = 431 - y [ l ] = -6 ] 0[4] 1*[1]- ~ [ = y[S] = “5] - y[3] = Solution 14.5 Intcrrial part: 1eax-c oiit iiiput S i g d External part: y,,+[O] =2 sct initial state> t o zero =2 +[ I ] = + 0.5 (1 + vrxc [OJ) = 3.2 ycxt[2] = ’ + 0.5 ( + ) = 4.25 y,,+[3] = + 0.5 ( I + 4.23) = 1.625 Iriilial condition Solution 14.6 a) h iiiiique assigizmcnt of iiiii,ial states is orily possible with ca,rioriic:;tlfolms DF I: Begin wit,li the fcedback brmch