$($d$)$ What is $\backslash$beta$?$ Give an expression for the loop gain AA$\backslash$betaA and the amount of feedback $(1+$A$)(1+$ A$\backslash$beta$)(1+$A$).$

$($e$)$ Derive an expression for AfA$\_$fAf$.$

$($f$)$ Derive expressions for RiR$\_$iRi$,$ RinR$\_\{$in$\}$Rin$,$ RoR$\_$oRo$,$ and RoutR$\_\{$out$\}$Rout$.$

$($g$)$ Evaluate AAA, $\backslash$beta$,$ AA$\backslash$betaA$,$ AfA$\_$fAf$,$ RiR$\_$iRi$,$ RoR$\_$oRo$,$ RinR$\_\{$in$\}$Rin$,$ and RoutR$\_\{$out$\}$Rout$$ for the component values given.