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diff --git a/3673/CH17/EX17.a.7/Example_a_17_7.sce b/3673/CH17/EX17.a.7/Example_a_17_7.sce
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+++ b/3673/CH17/EX17.a.7/Example_a_17_7.sce
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+//Example_a_17_7 page no:867
+clc;
+f=12*10^3;
+L=10*10^-3;
+C=0.32*10^-6;
+fc=1/(%pi*sqrt(L*C));
+k=sqrt(L/C);
+atten_cont=2*acosh(f/fc);
+disp(fc/1000,"the cut off frequency is (in kHz)");
+disp(k,"nominal impedance is (in ohm)");
+disp(atten_cont,"the attenuation constant is (in nepers)");