Question: What is the derivative of the Lagrangian (of what system I don't particularly care right now) with respect to entropy (or to the time derivative of entropy)? Is this even a sensible question? Can we use the Euler-Lagrange equation for entropy?

#lagrangian #lagrangianMechanics #physics #physicsQuestion #entropy #eulerLagrangeEquation #eulerLagrangeEquations