In[]:=
eq1=(IDSAT-((0.5*mun0*Coxn*W/L)*((VGS-Vth)^2)*(1+lambdan*VDS))==0);​​eq2=(IRSS-(VX/RSS)==0);​​eq3=(IRD-(VDD/RD)+(VOUT/RD)==0);​​eq4=(VGS-VG+VX==0);​​eq5=(VDS-VOUT+VX==0);​​eq6=(VG-VIN==0);​​eq7=(IDSAT-IRD==0);​​eq8=(IRD-IRSS==0);​​​​eqns={eq1,eq2,eq3,eq4,eq5,eq6,eq7,eq8};​​Solve[eqns,VOUT]​​
Out[]=
{}
In[]:=
eq1=(ID==((0.5*mun0*Coxn*W/L)*((VGS-Vth)^2)*(1+lambdan*VOUT)));​​eq2=(IRD==ID);​​eq3=(IRD==(VDD-VOUT)/RD);​​​​eqnsp2={eq1,eq2,eq3};​​Solve[eqnsp2,VOUT]​​
Out[]=
{}
In[]:=
​