Consider the following statements for continuous-time linear time inva...
If a system is non-causal then a pole on right half of the s-plane can give BIBO stable system. But for a causal system to be BIBO all poles must lie on left half of the complex plane.
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Consider the following statements for continuous-time linear time inva...
Statement I: There is no bounded input bounded output (BIBO) stable system with a pole in the right half of the complex plane.
Explanation:
- A continuous-time linear time-invariant (LTI) system is BIBO stable if and only if all its poles are in the left half of the complex plane.
- The left half of the complex plane is the region where the real parts of the complex numbers are negative.
- The right half of the complex plane is the region where the real parts of the complex numbers are positive.
- In other words, for a system to be BIBO stable, all its poles must have negative real parts.
Statement II: There is non-causal and BIBO stable system with a pole in the right half of the complex plane.
Explanation:
- A system is causal if the output at any time depends only on the present and past inputs.
- A non-causal system is one where the output at a certain time depends on future inputs, which is not physically realizable.
- BIBO stability is a property that depends only on the system's poles and zeros, and not on causality.
- Therefore, it is possible to have a non-causal system that is BIBO stable with a pole in the right half of the complex plane.
Conclusion:
- Statement I is true because a BIBO stable system cannot have poles in the right half of the complex plane.
- Statement II is true because BIBO stability does not depend on causality, and it is possible to have a non-causal system that is BIBO stable with a pole in the right half of the complex plane.
- Therefore, the correct answer is option D, "Only II is true."