Consider the circuit below

$I_{\text{B}\text{u}\text{s}}=100A,Q_2$ and $Q_3$ are matched, and $R_{d^{}g}=200k.$ For $Q_1$:${}_n{C}_{ox}=90A{V}^2,V_A=12\mathrm{.}8V,$WIL$=100\frac{m}{1\mathrm{.}6}m,C_{}=0\mathrm{.}2pF,$ and $C_{8d}=0\mathrm{.}015pF.$ For $Q_2$:$|V_A|=19\mathrm{.}2V.$ Neglecting the effect of the capacitance inevitably present at the output node, find the low$-$frequency gain, the $3-$dB frequency $f_{11},$ and the frequency of the zero $fz.$

b$)$ Draw the magnitude and phase bode plot

c$)$ Given $Cdb=0\mathrm{.}02pF,$ how will the frequency response change, draw the resulting magnitude and phase bode plot

useful equations

$r_o=\frac{|V_A|}{I_D},g_m=\sqrt[\phantom{2}]{2{}_n{C}_x(\frac{W}{L}{)}_1{I}_{D1}}$