Viviani, Vincenzo, De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei

Table of contents

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[241.] MONITVM.
[242.] THEOR. XV. PROP. XXI.
[243.] PROBL. II. PROP. XXII.
[244.] PROBL. III. PROP. XXIII.
[245.] MONITVM.
[246.] THEOR. XVI. PROP. XXIV.
[247.] THEOR. XVII. PROP. XXV.
[248.] COROLL.
[249.] THEOR. XIIX. PROP. XXVI.
[250.] COROLL. I.
[251.] COROLL. II.
[252.] SCHOLIVM.
[253.] LEMMA VI. PROP. XXVII.
[254.] LEMMA VII. PROP. XXVIII.
[255.] LEMMA VIII. PROP. XXIX.
[256.] THEOR. XIX. PROP. XXX.
[257.] SCHOLIVM.
[258.] COROLL.
[259.] LEMMA IX. PROP. XXXI.
[260.] THEOR. XX. PROP. XXXII
[261.] PROBL. IV. PROP. XXXIII.
[262.] PROBL. V. PROP. XXXIV.
[263.] DEFINITIONES. I.
[264.] II.
[265.] LEMMA X. PROP. XXXV.
[266.] THEOR. XXI. PROP. XXXVI.
[267.] THEOR. XXII. PROP. XXXVII.
[268.] SCHOLIVM.
[269.] LEMMA XI. PROP. XXXVIII.
[270.] LEMMA XII. PROP. XXXIX.
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25066 hoc eſt portiones A B C, S O R eſſe æqualium baſium, ſed H O I maior eſt
S O R, totum parte, ergo, &
A B C, quæ ipſi H O I eſt æqualis, erit 1145. h. eadem S O R, & hoc ſemper, & c. vnde portio A B C eſt _MAXIMA_ portio-
num æqualium baſium.
Quod primò erat, & c.
206[Figure 206]
Pręterea, cũ in tertia figura, quæ ex K ducitur interiorem Ellipſim F D G
contingens ſit _MAXIMA_ eandem Ellipſim contingentium, ipſa erit 2247. h. no maior A C;
quare eidem axi applicata, quæ ipſi A C ſit æqualis, mino-
rem axim ſecabit inter L, &
K, & ſit ea T V X. Si ergo concipiatur per V
deſcripta Ellipſis, datis A B C, F D G ſimilis, &
concentrica, recta T V X
hanc Ellipſim continget, eritque _MAXIMA_ eandem Ellipſim 33ibidem. tium, quapropter portiones, quarum baſes ſint æquales baſi T V X, hanc
mediam Ellipſim omnino ſecabunt, ac ideo maiores erunt portione T L X,
cum portiones ab ijſdem contingentibus abſciſſæ ſint omnes portioni 4445. h. æquales.
Quare portio T L X eſt _MINIMA_ portionum æqualium baſium,
ex eadem Ellipſi A B C abſciſſarum.
Quod erat vltimò demonſtrandum.
COROLL.
EX his conſtat _MINIMAM_ portionum ſemi-Ellipſi maiorum, quarum
baſes ſint ęquales eam eſſe, cuius diameter ſit ſegmentum maioris axis,
_MAXIMAM_ verò, cuius diameter ſit ſegmentum minoris.
Nam in tertia figura, cum portionum A B C, S O R, T L X, & c. ſemi-El-
lipſi minorum, &
ſuper æqualibus baſibus, ipſa A B C ſit _MAXIMA_, & TLX
_MINIMA_, ac ipſæ ſint portiones eiuſdem terminatæ magnitudinis, ſiue Elli-
pſis eiuſdem A B C N, patet reliquarum portionum ſemi-Ellipſi maiorum
A N C, S N R, X M T, &
c. quæ item ſunt ſuper æquales baſes A C, S R,
T X, portionem A N C eſſe _MAXIMAM_, &
X M T _MINIMAM_.

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