In the circuit shown below, let
R1=1000;R2=3600;Ri=10000;Ro=600;vt=1;A=5000;
syms vn
vn=solve(vn/R1+vn/Ri+(vn-vt)/R2,vn)
it=(vt-vn)/R2+(vt-A*(0-vn))/Ro
Rout=vt/it;
vn=vpa(vn,11)
it=vpa(it,11)
Rout=vpa(Rout,11)
Answers:
vn =
0.20161290323
it =
1.6819959677
Rout =
0.59453174632
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