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+clc;
+//page no 7-18
+//Example 7.2
+//Given
+fc=13.5;//in MHz
+fd=8.5;//in kHz
+//At point 1
+disp("At point 1");
+fc1=2*fc;
+fd1=2*fd;
+disp(+'MHz',fc1,'Carrier frequency is');
+disp(+'kHz',fd1,'Frequency deviation is');
+//At point 2
+disp("At point 2");
+fc2=3*fc1;
+fd2=3*fd1;
+fmax2=(fc2+fd2*10^(-3));
+fmin2=(fc2-fd2*10^(-3));
+disp(+'MHz',fc2,'Carrier frequency is');
+disp(+'kHz',fd2,'Frequency deviation is');
+disp(+'MHz',fmax2,'fmax=');
+disp(+'MHz',fmin2,'fmin=');
+//At poiint 3
+disp("At point 3");
+//Oscillator frequency is 20MHz
+Of=20;//in MHz
+fc3=fc2+Of;
+fmax3=fmax2+Of;
+fmin3=fmin2+Of;
+fd3=(fmax3-fc3)*10^3;//in kHz
+disp(+'MHz',fc3,'Carrier frequency is');
+disp(+'MHz',fmax3,'fmax=');
+disp(+'MHz',fmin3,'fmin=');
+disp(+'kHz',fd3,'Frequency deviation is');