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diff --git a/2609/CH9/EX9.16/Ex9_16.sce b/2609/CH9/EX9.16/Ex9_16.sce
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+//Ex 9.16
+clc;
+clear;
+close;
+format('v',5);
+disp("Part(a)");
+fc=1.2;//kHz
+Q=4;//Quality Factor
+Ap=10;//Pass band gain
+disp("Here 2*Q^2=32>AP=10, hence it can be designed using single op-amp.");
+disp("Various design parameters are :-");
+C=0.05;//micro F//Chosen for the design
+disp(C,"Capacitance C(micro F)");
+//fc/Q=1/(%pi*R2*C)
+R2=Q/(fc*1000)/%pi/(C*10^-6)/1000;//kohm
+disp(R2,"Resistance R2(kohm)");
+disp("Use R2=22 kohm");
+format('v',5);
+R1=R2/(2*Ap);//kohm
+disp(R1,"Resistance R1(kohm)");
+R3=R1*1000/(4*%pi^2*R1*1000*R2*1000*(C*10^-6)^2*(fc*1000)^2-1);//ohm
+disp(R3,"Resistance R3(ohm)");
+disp("Use R3=460 ohm");
+disp("Part(b)");
+R3=460;//ohm
+fc_new=1.5;//kHz
+fc_old=1.2;//kHz
+R3new=R3*(fc_old/fc_new)^2;//ohm
+disp("Resistance R3 should be changed from "+string(R3)+" ohm to "+string(R3new)+" ohm");
+///Answer for R3 is wrong in the book