Viviani, Vincenzo
,
De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei
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<
s
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xml:space
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">Cum ſit BE ad EM, vt OH ad HE, erit
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0116-01
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/QN4GHYBF/figures/0116-01
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componendo BM ad ME, vt OE ad EH,
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vel vt RM ad MN; </
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<
s
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gulum BMN ſiue quadratum
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1. huius.</
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AM in Hyperbola ABC, æquale erit re-
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ctangulo EMR, ſiue quadrato
<
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">ibidem.</
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MP in Hyperbola PEQ; </
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<
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">ac ideò lineæ
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MA, MP ſunt æquales, quare Hyperbo-
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læ ABC, PEQ occurrunt ſimul in pun-
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cto Q, in quo etiam ſe mutuò ſecabunt.
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</
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<
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">Nã ſumpto in ſectione QEP infra P quo-
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libet puncto S, per quod applicata STV,
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ſectionem ABC, diametrum, ac regulas
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ſecans in T, V, X, Y: </
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<
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">cum ſit EM minor
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EV, habebit BE ad EM, vel OH ad HE,
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vel YX ad XV, maiorem rationem quam
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BE ad EV, & </
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<
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xml:space
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">componendo YV ad VX
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maiorem rationem, quàm BV ad VE, vnde rectangulum YVE, ſiue
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1. huius.</
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dratum VS in Hyperbola EAS, maius erit rectangulo XVB, ſiue
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">16. ſept.
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Pappi.</
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1. huius.</
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to VT in Hyperbola ABC: </
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<
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">vnde punctum S cadit extra Hyperbolen ABC,
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ac ideò ipſæ Hyperbolæ ſe mutuò ſecant, ſicuti in altero extremo Q, eiuſ-
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dem applicatæ. </
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<
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xml:space
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">Erit ergo Hyperbole IEL, quæ datæ ABC ſimilis eſt, & </
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eandem regulam, _MAXIMA_ inſcripta quæſita. </
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<
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ſcriptæ, ac circumſcriptæ ſectionis, mlreferat ignorare quo nam in puncto,
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maior, vel minor quæſitarum ſectionum, datæ ſectioni occurrat, ſufficit
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enim oſtendere ipſas, vbicunq; </
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<
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">ſit earum occurſus, aliquando ſe mutuò ſeca-
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re) ideò in proximè ſequentibus problematibus, hac omiſſa methodo per appli-
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catarum potentias, tanquam prolixiori, & </
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<
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elegantiori induſtria demonſtr abimus, & </
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ſionibus conſequi poſsit, vt in hac, & </
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men eas eligemus, quæ apportunæ magis nobis videbuntur.</
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">SEcetur igitur E F bifariam in 2, erit 2 centrum Hyperbolarum IEL,
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PEQ, ex quo ductis harum aſumptotis, videlicet 2 3 inſcriptæ IEL,
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& </
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">2 4 circumſcriptæ PEQ, quæ cadet extra aſymptoton 2 3, ex D
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ma parte
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37. huius.</
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que agatur D 5 aſymptotos Hyperbolæ ABC.</
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<
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">Iam cum Hyperbolæ ABC, IEL ſimiles ſint, per diuerſos vertices, & </
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eandem regulam FGH ſimul adſcriptæ, erunt earum aſymptoti D 5, 2 3
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inter ſe parallelæ ſed 2 4 inter ipſas cadit, & </
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<
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45. huius.</
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re ipſa 2 4 producta ad partes 4, ſecabit & </
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<
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aſymptotos ſectionis SPEQ, & </
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