Viviani, Vincenzo, De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei
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21028 intra Hyperbolen, inter axem, & peripheriam, vt in ſexta, & ſeptima
(nam ſi eſſet in ipſa peripheria, vt in A, tunc _MINIMA_ abiret in pun-
ctum.)
Iungatur H, centrum Hyperbolæ, cum dato puncto F recta linea
H F, quæ ita ſecetur in I, vt H I ad I F ſit vt tranſuerſum latus G B ad
rectum B E, ſumaturque H L æqualis F I, &
per L agatur L M axi B D
æquidiſtans, ac per I axi ordinata N I O, &
in angulo N O M per datum
in eo punctum A deſcribatur Hyperbole F A, quæ in vno tantùm 114. ſecun-
di conic.
ctum A cum ſectione A B C conueniet.
Dico iunctam F A eſſe 2212. h. _MAM_ quæſitam.
173[Figure 173]
Ducatur A P axi ordinata, & A Q Hyperbolen contingens in A, 332. pr. h. ſecabit axim in Q. Et quoniam in Hyperbola A F ſumpta ſunt duo 4424. pri-
mi conic.
cta A, F, è quorum altero A ducta eſt A P alteri aſymptoto N O æqui-
diſtans, ex altero verò F, recta F I L H vtranque aſymptoton ſecans in
I, L;
eſtque L H in directum, & æqualis poſita ipſi I F, & ex H recta
H B P alteri aſymptoto O M æquidiſtans, cum alia A P conueniens in P,
erit iuncta I P parallela ad F A;
ſed H P ſecat I P alteram 5514. h. quare producta ſecabit quoque reliquam H F: ſecet igitur in R. Erit er-
go in triangulo H F R (ob parallelas) H P ad P R, vt H I ad I F, vel

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