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+// Exa 6.8
+clc;
+clear;
+close;
+// Given Data
+C= 0.1;// in micro F
+C=C*10^-6;// in F
+R1= 2;// in kohm
+R1=R1*10^3;// in ohm
+R2= 2/3;// in kohm
+R2=R2*10^3;// in ohm
+R3= 200;// in kohm
+R3=R3*10^3;// in ohm
+// R1= Q/(2*%pi*fc*C*Af)           (i)
+// R2= Q/(2*%pi*fc*C*(2*Q^2-Af))   (ii)
+// R3= Q/(%pi*fc*C)                (iii)
+// From (i) and (iii)
+Af= R3/(2*R1);
+// From (ii) and (iii)
+Q= sqrt(1/2*(R3/(2*R2)+Af));
+// From (iii)
+fc= Q/(R3*%pi*C);// in Hz
+omega_o= 2*%pi*fc;// in radians/second
+disp(Af,"Gain");
+disp(Q,"Value of Q");
+disp(omega_o,"Centre frequency in radians/second")