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+// Network Synthesis : example 12.9 : (pg 12.6)

+s=poly(0,'s');

+p1=((s^5)+(3*(s^3))+(2*s));

+p2=((5*(s^4))+9*(s^2)+2);

+[r,q]=pdiv(p1,p2);

+[r1,q1]=pdiv(p2,r);

+[r2,q2]=pdiv(r,r1);

+[r3,q3]=pdiv(r1,r2);

+[r4,q4]=pdiv(r2,r3);

+printf("\n P(s) = ((s^5)+(3*(s^3))+(2*s))");

+printf("\n d/ds.P(s)= ((5*(s^4))+9*(s^2)+2)");

+printf("\nQ(s)=P(s)/d/ds.P(s)");

+// values of quotients in continued fraction expansion

+disp(q);

+disp(q1);

+disp(q2);

+disp(q3);

+disp(q4);

+printf("\nSince all the quotient terms are positive, P(s) is hurwitz");