0
$\begingroup$

This question already has an answer here:

It is the first law of thermodynamics for a very small change in the state of the system.

enter image description here

It is in Heat thermodynamics and statistical physics by Brij Lal, Dr. N. Subrahmanyam, and P.S. Hemne.

$\endgroup$

marked as duplicate by Qmechanic Aug 9 at 14:39

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.