Notfsale.3=Wecanseethat:=Combiningtheabovetwoequationsweget:=(c)Ifwelet?[?]?[?]representthesignalspasteachfeedfwardcomponentthen:=()==Substitutingthetoptwoequationsintothelastequationweget:=()()()=()()()()()()()()()whichleadsto:[]=[0][][0]111213()[1][0]2112112211131213()[2][0]122111221321111213132211231223()[3][0]22211213211113221112232223()[4][0]211322211223222311()[5][0]212223[6](d)Let0[]1[]denotetheoutputsofthethreeadders:====123