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diff --git a/1523/CH12/EX12.8/ex12_8.sce b/1523/CH12/EX12.8/ex12_8.sce
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+// Network Synthesis : example 12.8 : (pg 12.5)
+s=poly(0,'s');
+p1=((s^4)+(5*(s)^2)+10);
+p2=(5*(s^3)+(4*s));
+[r,q]=pdiv(p1,p2);
+[r1,q1]=pdiv(p2,r);
+[r2,q2]=pdiv(r,r1);
+[r3,q3]=pdiv(r1,r2);
+printf("\nEven part of P(s) = ((s^4)+(5*(s)^2)+10)");
+printf("\nOdd part of P(s) = (5*(s^3)+(4*s))");
+printf("\nQ(s)= m(s)/n(s)");
+// values of quotients in continued fraction expansion
+disp(q);
+disp(q1);
+disp(q2);
+disp(q3);
+printf("\nSince two terms are negative, P(s) is not hurwitz");