Networks Analysis and Synthesis

Q1: Which of the following polynomials is not Hurwitz?

A P1 = s8 + 2s6 + 4s4

B P2 = s6 - 3s4 + 2s2 + 1

C P3 = s4 + 3s3 + 3s2 + 2s + 1

D P4 = s7 + 2s6 2s4 + 4s3 + 8s2 + 8s + 4

ANS:B - P2 = s6 - 3s4 + 2s2 + 1

One coefficient is negative. Hence not Hurwitz.



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