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+clc;
+//page no 5-13
+//Example 5.9
+//Given maximum and minimum frequency as 99.047MHz and 99.023MHz respectively. Frequency of modulating signal is 7kHz
+Hf=99.047*10^6;//in Hz
+Lf=99.023*10^6;//in Hz
+fm=7;//in kHz
+Cs=(Hf-Lf)*10^(-3);
+disp(+'kHz',Cs,'Carrier swing is');
+fd=Cs/2;
+disp(+'kHz',fd,'Frequency deviation is');
+fc=(Hf-(fd*10^3))*10^(-6);
+disp(+'MHz',fc,'Carrier frequency is');
+beta1=fd/fm;
+disp(beta1,'Modulation index is');