Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: {\displaystyle {\dot {\mathbf {x} }}(t) =A(t) \mathbf {x} (t) +B(t) \mathbf {u} (t) +\mathbf {v} (t),}  Pātai: He aha te reta kei waenganui i te ()?
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