Symbolsk løsning av nodeligninger med Matlab

% Using Kirchoff's current law (KCL) on a source follower configuration % to find Vout as a function of Vin % Kjetil Ullaland, 10. september 1996

ligning1='(Vout-Vgs)/Zc+gm*Vgs+Vout/Rl=0'; ligning2='(Vgs-Vout)/Zc+(Vgs-Vin)/Rs=0'; ligning1=subs(ligning1,'1/(j*w*C)','Zc'); ligning2=subs(ligning2,'1/(j*w*C)','Zc'); pretty(ligning1); pretty(ligning2);

Vgs_solved=simplify(solve(ligning2,'Vgs')) pretty(Vgs_solved) ligning3=subs(ligning1,Vgs_solved,'Vgs'); Vout_solved=simplify(solve(ligning3,'Vout')) pretty(Vout_solved)