Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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GEOMET. VARIA.
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portionales fieri poſſit, ubi ratio tangentis ad abſciſ-
<
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ſam eſt ea quæ numeri ad numerum, hinc apparuit curvam
<
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quæſitam tunc iis accenſendam quæ geometricæ vocantur,
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alias eſſe ex heterogeneis; </
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<
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poſita lineæ logarithmicæ deſcriptione, quam quidem hic ad-
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ducerem, niſi viderem haud difficulter ex ipſa Jacobi Ber-
<
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noullii doctiſſima ſimul breviſſimaque ſolutione omnia erui
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poſſe, ut jam ab aliis occupatam dubitem.</
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<
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">Colligitur vero ex his illud animadverſione dignum,
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nempe quandocunque in inveſtigatione curvarum ex tan-
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/>
gentibus aut ſubtangentibus ejus, ad ſimiles ei, quam dixi,
<
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æquationes pervenietur, aut in quibus habeatur utrinque
<
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elementum ſpatii ad trapezium hyperbolicum reductibilis;
<
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</
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<
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xml:space
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curvæ geometricæ diverſorum generum graduumque exi-
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ſtant, ſi hyperbolarum ad quas devenitur rectangula
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quæ in aſymptotis, ſint commenſurabilia. </
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>
<
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xml:space
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">Præterea
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obſervanda venit in hoc problemate inuſitata ac ſin-
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gularis analyſis via, quæ ad alia multa in hac Tan-
<
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/>
gentium doctrina aditum aperit, ut egregie jam ani-
<
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/>
madvertit Vir Celeberrimus calculi differentialis inven-
<
lb
/>
tor, ſine quo vix eſſet, ut ad haſce geometriæ ſubti-
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litates admitteremur. </
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<
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xml:space
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">Porro quod ad curvarum, de qui-
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bus agitur, deſignationem in plano attinet, poſſem, ſi
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operæ pretium eſſet, alios modos ac fortaſſe com-
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modiores indicare quam qui a Cl. </
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<
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">Bernoullio præſcri-
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bitur, atque etiam docere qua ratione optime peraga-
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tur deſcriptio noſtræ quadratricis hyperbolæ, quæ in-
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ter Tractorias (ita enim vocari poſſunt) ſimpliciſſi-
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/>
ma cenſenda eſt, cum ad eam filis nihil opus ſit,
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ſed bacillo tantum utrimque cuſpidem lateri infixam
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habente, quo fit ut & </
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xml:space
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">regreſſu explorari poſſit quam
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recte exarata ſit. </
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xml:space
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nec inſignis uſus aliquis harum linearum in lucem
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proferatur. </
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