For the differential amplifier specified in Problem. $3$ let VG$2=0$ and V G$1=$ Vid $.$ Find the value of Vid that corresponds to each of the following situations:

$($a$)$ ID$1=$ ID$2=0\mathrm{.}08$ mA

$($b$)$ ID$1=0\mathrm{.}12$ mA and ID$2=0\mathrm{.}04$ mA

$($c$)$ ID$1=0\mathrm{.}16$ mA and ID$2=0($Q$2$ just cuts off$)$

$($d$)$ ID$1=0\mathrm{.}04$ mA and ID$2=0\mathrm{.}12$ mA

$($e$)$ ID$1=0$ mA $($Q$1$ just cuts off$)$ and ID$2=0\mathrm{.}16$ mA$.$

For each case, find VS $,$ VD$1,$ VD$2,$ and $($VD$2$ VD$1).$