A discrete$-$time system is described by the frequency response

H$($e$30)=1+$

The impulse response of this system takes the form

h$[$n$]=$ f$[$n$]+$ cirnuln$]+$ c$2$ru$[$n$]$

$0\mathrm{.}75$e$-$jw

$(1-0\mathrm{.}5$e$-$jw$)(1+0\mathrm{.}25$e$-$jw$)$

y ra What is

at is flnl$?$

$?$

where r