: Astronomie: state variable

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state variable

A state variable is one of the set of variables that are used to describe the mathematical "state" of a dynamical system. Intuitively, the state of a system describes enough about the system to determine its future behaviour in the absence of any external forces affecting the system. Models that consist of coupled first-order differential equations are said to be in state-variable form. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/State_variable)

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