Bernoulli, Daniel, Hydrodynamica, sive De viribus et motibus fluidorum commentarii

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6450HYDRODYNAMICÆ.
Denique punctum E maximo reſpondens deſcenſui obtinetur ope hu-
jus
æquationis,
ξ
- αlog.
ξ = β - αlog. β
Alter caſus ſeorſim ſubducendus calculo eſt, cum mm = 2nn, ubi
oritur

v
= {αξ - αβ - ξβlog.
ξ + ξβlog. β/}
atque
ſi capiatur, poſito c pro numero, cujus logarithmus eſt unitas,
ξ
= c{α - β/β}β determinabitur ſic locus maximæ velocitatis, cujus altitudo
generatrix
eſt = c{α - β/β}β - α, dum maximus deſcenſus, qui proportiona-
lis
eſt toti aquæ effluenti, definitur faciendo
αξ
- αβ - ξβlog.
ξ + ξβlog. β = o

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