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+// Example 9.4: (i) Voltage gain, Input impedance, Output impedance
+//             (ii) Output voltage
+clc, clear
+gm=2.5; // in mili-Siemens
+// From Fig. 9.14(a)
+RG=3; // in Mega-ohms
+RD=2.2; // in kilo-ohms
+
+disp("Part (i)");
+AV1=-gm*RD; // Voltage gain of both individual stages
+AV=AV1^2; // Overall voltage gain
+disp(AV,"Voltage gain =");
+disp(RG,"Input impedance (MΩ) =");
+disp(RD,"Output impedance (kΩ) =");
+
+disp("Part (ii)");
+Vi=10; // in mili-volts
+RD_dash=RD*10/(RD+10); // Effective load of secong stage in kilo-ohms
+// Now the gain of second stage
+AV2=-gm*RD_dash;
+AV=AV1*AV2; // Overall voltage gain
+Vo=Vi*AV; // Output voltage in mili-volts
+disp(Vo,"Output voltage (mV) =");
+\ No newline at end of file