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+//Example 6.1: 
+clc;
+clear;
+close;
+//given data :
+Vgs= [0;0;0.3];//in V
+Vds=[5;10;10];//in V
+Id=[8;8.2;7.6];//in mA
+dVds=Vds(2)-Vds(1);//in V
+dId=Id(2)-Id(1);//in mA
+rd=(dVds/dId);//in kilo-ohm
+format('v',4)
+disp(rd,"(i) A.C. Drain resistance is ,(kilo-ohm)=")
+dVgs=Vgs(3)-Vgs(2);//in V
+dId1=Id(2)-Id(3);//in mA
+gm=dId1/dVgs;//in mA/volt
+format('v',3)
+disp(gm,"(ii) Transconductance is ,(mS)=")
+mu=gm*rd;//A/V
+format('v',4)
+disp(mu,"(iii) Amplification factor is ,=")
+//Transconductance and Amplification factor are calculated wrong in the textbook