Laplace, Pierre Simon, marquis de, 1749-1827 · Boston, Hillard, Gray, Little, and Wilkins · leaf 351
317 RELATIVE MOTIONS OF A SYSTEM OF BODIES. II. ii. § 15.] … By using other co-ordinates, we may form new systems of differential equations. Suppose, for example, that we change the co-ordinates x and y of the equations («'), ^ 14 [499], into others, relative to two moveable axes, situated in the plane of the co-ordinates x, y ; so that the first of these…
Celestial mechanics · Tides · Capillarity
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