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diff --git a/881/CH1/EX1.3/exa1_3.sce b/881/CH1/EX1.3/exa1_3.sce
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+clc;
+//Example 1.3
+//Page no 8
+
+//Solution
+
+//(a)
+
+dBm1=10*log10([500*(10^-3)]/[1*(10^-3)]);
+
+disp('dBm',dBm1,"(a) 500 mW in dbm = ");
+
+//(b)
+
+dBm2=10*log10([10*(10^-9)]/[1*(10^-3)]);
+
+disp('dBm',dBm2,"(b) 10 nW in dbm = ");
+
+//(c)
+
+dBm3=10*log10([100*(10^-6)]/[1*(10^-3)]);
+
+disp('dBm',dBm3,"(c) 100 uW in dbm = ");