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Control SystemsRouth-Hurwitz

The number of sign changes in the first column of a Routh array equals the number of roots in the?

  • ALeft half-plane
  • BRight half-plane
  • COrigin only
  • DImaginary axis only
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Correct Answer: B. Right half-plane
Explanation: Routh's criterion states that first-column sign changes equal the number of roots in the right half of the s-plane.
Reference: Standard control systems: routh-hurwitz
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