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Control SystemsStability

A continuous-time system has characteristic equation s³+6s²+11s+6=0. Its poles are -1, -2 and -3. The system is?

  • AAsymptotically stable
  • BUnstable
  • CMarginally stable
  • DNoncausal necessarily
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Correct Answer: A. Asymptotically stable
Explanation: All poles have strictly negative real parts, so the continuous-time system is asymptotically stable.
Reference: Standard control systems: stability
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