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diff --git a/2582/CH3/EX3.20/Ex3_20.sce b/2582/CH3/EX3.20/Ex3_20.sce
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+//Ex 3.20
+clc;clear;close;
+format('v',6);
+omegaBYomega0=[0 0.5 1 5 10 100];
+//T=omega0/sqrt(omega0^2+omega^2);//Gain
+for i=1:6
+T(i)=1/sqrt(1^2+omegaBYomega0(i)^2);//Gain    
+end
+G=20*log10(T);//dB
+A=-20*log10(T);//dB
+fi=-atand(omegaBYomega0);//degree
+disp("omega/omega0        T(j*omega)        (G(dB))        A(dB)        fi")
+table=[omegaBYomega0' T G A fi'];
+disp(table);