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+clc;
+//page no 5-13
+//Example 5.7
+//Given carrier frequency is 50.4MHz and th highest freuency reached is 50.405 MHZ
+Hf=50.405*10^6;//in Hz
+fc=50.4*10^6;
+fd=(Hf-fc)*10^(-3);//in kHz
+disp(+'kHz',fd,'Frequency deviation= ');
+Cs=2*fd;
+disp(+'kHz',Cs,'Carrier swing= ');
+Lf=[fc-(fd*10^(3))]*10^(-6);
+disp(+'MHz',Lf,'Lowest frequency attained= ');