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+// chapter 1
+// example 1.9
+//page 34, figure 1.38
+Xdc=100;Xac=100;// gain
+Vbe=0.7;Vee=12;Vcc=12;//given voltage in volts
+Re=4700;Rin=50;Rc=2700;// given resistance in ohm
+Hfe=100;Hie=1100;// given
+Icq=(Vee-Vbe)/(2*Re+(Rin/Xdc));
+Vceq=Vcc+Vbe-Rc*Icq;
+disp(Icq,Vceq)//operating point(volt,ampere)
+Aid=(Hfe*Rc)/(Rin+Hie);// voltage gain
+disp(Aid)// result
+Ri=2*(Rin+Hie)// input resistance
+disp(Ri)//in ohm
+Ro=Rc;// output resistance
+disp(Ro)//output resistance in ohm
+\ No newline at end of file