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Use the Routh-Huritz Criterion, determine the number of RHP, LHP and jw poles for the closed...

Use the Routh-Huritz Criterion, determine the number of RHP, LHP and jw poles for the closed loop transfer function given.

T(s) = 1/( s4 + 4s3 + 3s2 + 12s + 12)

  

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Answer #1

by inspecting there are no poles on jw axis but there are 2 complec poles are there in RHS

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