define state variable & state function.
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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.
State Function - It is a quantity in thermodynamics, such as entropy or enthalpy, that has a unique value for each given state of a system
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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.
State functions are defined by comparing them to path functions. As stated before, a state function is a property whose value does not depend on the path taken to reach that specific function or value.....
Thus, a path function is a property or value that is dependent on the path taken to establish that value.
State functions are defined by comparing them to path functions. As stated before, a state function is a property whose value does not depend on the path taken to reach that specific function or value.....
Thus, a path function is a property or value that is dependent on the path taken to establish that value.
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