Test whether the following polynomials are Hurwitz using Routh Array…

Question

Test whether the following polynomials are Hurwitz using Routh Array and partial fraction expansion.

i. $P(s) = s^3 + 4s^2 + 5s + 2$

ii. $P(s) = s^4 + 7s^3 + 6s^2 + 21s + 8$

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