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| Acronym | Full form | |
|---|---|---|
| Acronym: ROC | region of convergence | e signals === For a causal, rational, continuous-time system, the condition for stability is that the region of convergence (ROC) of the Laplace transform includes the imaginary axis. When the system is causal, the ROC is the open region to the right of a vertical line whose abscissa is the [[real |