For the given circuit below:

Find

a$.i_D$ and $V_{ds}$ for the DC case

b$.g_m,$

c$.$ The voltage gain, Av

d$.V_{ds}$ assuming $vg{s}_{gs}=0\mathrm{.}2cost$

$|V_{tH}|=0\mathrm{.}5V,K_n^{\text{'}}=0\mathrm{.}4m\frac{A}{V^2}$

$\frac{W}{L}=12\mathrm{.}5,V_{GS}=0\mathrm{.}7V$

take data from picture