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. Models that consist of coupled first-order differential equations are said to be in state-variable form.

Read more about State Variable: Examples, Control Systems Engineering, See Also

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... can be ignored and the diagram is simplified (though the

**variables**have now been renumbered) R ---

**State Variable**- See Also

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