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Zeros and gain of SISO dynamic system

If

`sys`

has internal delays,`zero`

sets all internal delays to zero, creating a zero-order Padé approximation. This approximation ensures that the system has a finite number of zeros.`zero`

returns an error if setting internal delays to zero creates singular algebraic loops. To assess the stability of models with internal delays, use`step`

or`impulse`

.To calculate the transmission zeros of a multi-input, multi-output (MIMO) system, use

`tzero`

.