Question

In the context of the book, L D Landau, E.M. Lifshitz - Mechanics Volume 1, what...

In the context of the book, L D Landau, E.M. Lifshitz - Mechanics Volume 1, what do they mean by integrals of motion?

For my understanding, it seems to be some quantities that are kept unchanged (constants)? Please, explain with an example.

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