Energy or force equations can minimize quantities {least constraint principle} {principle of least constraint}. For example, sum of kinetic-energy-to-potential-energy changes over time {action} can be minimum: integral of (kinetic energy - potential energy) * dt.
Mathematical Sciences>Calculus>Differential Equation>Kinds>Partial>Potential
3-Calculus-Differential Equation-Kinds-Partial-Potential
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Date Modified: 2022.0224