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3.55 Find the range of K for which all the roots of the following polynomial are in the LHP: s5+5s4 + 10s + 10s

3.55 Find the range of K for which all the roots of the following polynomial are in the LHP: s5+5s4 + 10s + 10s + 5s + K = 0. se Use Matlab to verify your answer by plotting the roots of the polynomial in the s-plane for various values of K.

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