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Determine whether system is stable


B = isstable(sys)
B = isstable(sys,'elem')


B = isstable(sys) returns 1 (true) if the dynamic system model sys has stable dynamics, and 0 (false) otherwise. If sys is a model array, then B is true if all models in sys are stable.

B = isstable(sys,'elem') returns a logical array of the same size as the model array sys. The logical array indicates which models in sys are stable.

isstable is only supported for analytical models with a finite number of poles.

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