Problem $3.$ A MOSFET amplifier is shown in Fig. $4.$ Assume V$\_($DD$)=20$V$,$R$\_(1)=100$k$\backslash$Omega $,$R$\_(2)=$

$300$k$\backslash$Omega $,$R$\_($S$)=700\backslash$Omega $,$R$\_($D$)=1\mathrm{.}2$k$\backslash$Omega $,$V$\_($Tn$)=0\mathrm{.}5$V$,$k$\_($n$)=10$m$($A$)/($V$^(2)),\backslash$lambda $\_($n$)=0\mathrm{.}02,$ and $\backslash$gamma $=0$

aI$\_($D$),$V$\_($DS$)\backslash$lambda $\_($n$)=0.$

bg$\_($m$)$ and r$\_($o$)($R$\_($in$))$ and the output resistance $($R$\_($Out$)).$

d$($A$\_($v$)=($v$\_($O$))/($v$\_($I$))).$

Figure $3$ MOSFET Amplifier