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diff --git a/147/CH9/EX9.7/Example9_7.sce b/147/CH9/EX9.7/Example9_7.sce
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+close();
+clear;
+clc;
+Rf = 5*10^6; //ohm
+Rl = 14*1000; //ohm
+rds = 40*1000; //ohm
+gm = 1*10^(-3); //mS
+//(a)
+//volatge gain ratio 'Av'
+Av = Rl*rds*(1-Rf*gm)/(Rf*rds+Rl*rds+Rl*Rf);
+mprintf("(a) Av = %0.2f\n\n",Av);
+
+//(b)
+//Applying KVL around outer loop
+//vi = i*Rf + Av*vi
+Zin = Rf/(1-Av); //ohm
+mprintf("(b) Zin = %d kohm\n\n",Zin/1000);
+
+//(c)
+zo = rds*Rf/(rds+Rf); //ohm
+mprintf("(c) zo = %0.2f kohm\n\n",zo/1000);
+
+//(d)
+Ai = Av*Zin/Rl;
+mprintf("(d) Ai = %0.1f",Ai);