I have to do this homework for electronics I course. Could you help?
For DC operating point,
As drain current of MOS >> base current of Q2, if we apply KCL at drain node current through R(D1) appoximately equals I(D).
To find V(GS), find V(G) by thevinin's theorem and V(S) by I(S) [remember I(S)=I(D). Substitute in I(D) formulae find I(D)). From that find V(DS)
V(D)=V(B2)==> find V(C2) accordingly find I(C2)
I(C2)=I(E2)==> find V(E2) ==> V(B3) ==> v(E3) ==> V(CE3)
From DC current you find g(m) for small signal analysis.
Draw small signal equivalent and by using KVL and KCL try to find i/p and o/p resistance and overall gain.