The first law of thermodynamics can be mathematically represented as:
ΔU = Q − W
Where ΔU is the change in internal energy of a system, Q is the heat added to the system, and W is the work done by the system. This equation states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.
Mathematical statement of the first law of thermodynamics
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