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Signals & SystemsStability

A causal rational continuous-time system has poles at -2 and +1. It is BIBO stable?

  • AYes, because one pole is negative
  • BNo, because a pole lies in the right half-plane
  • CYes, because it is causal
  • DAlways stable if rational
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Correct Answer: B. No, because a pole lies in the right half-plane
Explanation: For a causal rational CT system, all poles must lie strictly in the left half-plane for BIBO stability.
Reference: Standard signals and systems: stability
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