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+clc;
+clear all;
+//chapter 4
+//page no 123
+//example 4.6
+L=4*10^-6; //Henry
+C=9*10^-12; //Farad
+R=20*10^3; //ohm
+
+f0=1/(2*%pi*sqrt(L*C)); //frequency in Hz
+mprintf('(a) The resonant frequency is f0=%.2f MHz\n',f0*10^-6)
+Q=R*sqrt(C/L)
+mprintf(' (b) The Q is %i\n',Q);
+B=f0/Q;
+mprintf(' (c) The 3-dB bandwidth is B=%i KHz\n',B*10^-3);