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Signals & SystemsSystem Function

A causal system has H(s)=(s+2)/[(s+1)(s+5)]. Its poles are?

  • A-2 only
  • B-1 and -5
  • C1 and 5
  • D-2 and -5
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Correct Answer: B. -1 and -5
Explanation: Poles are roots of the denominator, hence s=-1 and s=-5.
Reference: Standard signals and systems: system function
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