For the following polynomials, use the Routh-Hurwitz method to figure out the number of roots withpositive real parts. Show your work (You can use MATLAB to check the results) Comment on the ability of the Routh-Hurwitz method to “detect” marginal stability in a system. a) A(s) = s² + 2s6 +2s5 +s4 + s³ + 2s² + s +1S b) A(s) = s5 —sª + s +2 c) A(s) = s6 +355 +2s³ +2s² + 3s + 2