alleryStart learning →For a causal stable LTI continuous-time system, the poles of H(s) must lie strictly in which region?
ARight half of the s-plane (Re(s) > 0)
BLeft half of the s-plane (Re(s) < 0)
COutside the unit circle |s|>1 only
DOn the real axis only always
Answer & Solution
Correct answer: B. Left half of the s-plane (Re(s) < 0)
**Causal + stable continuous LTI:** ROC includes the jω-axis and extends rightward
poles must be in the open left half plane.
**Discrete analogue:** inside unit circle.
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