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+clc;
+//Example 17.1
+//Page No 690
+
+
+
+//solution
+
+p1=10*10^-3;
+p2=0.5*10^-3;
+
+disp("(a)The power levels, ");
+
+P1=10*log10(p1/0.001);
+
+disp('dBm',P1,"P = ");
+
+P2=10*log10(p2/0.001)
+
+disp('dBm',round(P2),"P = ");
+
+disp("(b)The difference  ");
+
+P=10*log10(p1/p2);
+
+disp('dBm',round(P),"diff = ");
+
+disp("The 10mW power level is 13dB higher than 0.5W power level. ");