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+// Example 11.11: (a) Amplifier type
+//                (b) Input resistance, Output resistance, Transfer ratio
+clc, clear
+r_pi=1e3; // in ohms
+gm=0.1; // in mho
+
+disp("Part (a)");
+disp("It ia a CB-CE cascade, configuration. It has low input and high output impedance and hence corresponds to a current     amplifier.");
+
+disp("Part (b)");
+// From low frequency equivalent circuit in Fig. 11.40
+btao=gm*r_pi;
+Rin=r_pi/(1+btao); // Input resistance in ohms
+Rout=%inf; // Output resistance (= ro of Q2)
+Ai=gm*gm*Rin*3e3*1e3/(3e3+1e3); // Transfer ratio
+disp(Rin,"Input resistance (Ω) =");
+disp(Rout,"Output resistance =");
+disp(Ai,"Transfer ratio =");
+\ No newline at end of file