Hamilton's principle is described as(adsbygoogle = window.adsbygoogle || []).push({});

[itex]\delta[/itex]I=[itex]\delta[/itex][itex]\int[/itex]L dt = 0

so as the action is stationary.

This does not seem to be the same as dI/dt = 0, which is how I understand the condition for a function being stationary.

Am I misinterpreting the equation?

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# Hamilton's principle: why dA rather than dA/dt?

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