Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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[217] Pg. 700TAB. LIII.4 3 2 1 Annu Sat. lus
[218] 4 3 2 1 Jup.
[219] Luna Tellus
[220] Pag. 704.TAB. LIV.Fig. 1.Satu@@i. Jovis. Martis. Telluris. veneris. M@rc. ♎ Sol. ♈ VS
[221] Fig. 2Saturnus. Tellus. Luna. A C D R S K M G H T V N L Q Y P E F B
[222] Pag. 712.TAB. LV.Fig. 1.Sol.Sat.Jup.MarsTellusVenusMerc.
[223] Fig. 2.D A C B E
[Figure 224]
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[234] pag. 776.Tab. lvi.Fig. 1.B H V C K E T D F X P Z Q I Y O R S A
[235] Fig. 2.D S Y A d I M N d X D O Z B M E C R
[236] Fig. 3.Y T V A M N Z B E C R
[237] Fig. 4.L A M F H N G E D K B C
[238] Fig. 5.h A P O R Q G F D Z H E K L C B M
[239] Fig. 6.D A P r N O e Q K I V F H C L B M
[240] Fig. 7.C B C D A A
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215485 81[Figure 81]
I.
CONSTRUCTIO LOCI
AD HYPERBOLAM
PER ASYMPTOTOS.
In æquatione loci ad hyperbolam, ſi neutra indeter-
11TAB. XLIV.
fig. 4. 5. 6. 7.
minatarum linearum in ſeipſam ducta inveniatur,
velut ſi ſit xy = bb;
vel xy = cx. bb; (literis x & y
lineas indeterminatas A B, B C ſignificantibus,
quæ in dato angulo ſibi mutuò ſint applicatæ, quarumque al-
tera, ut A B, poſitione data intelligitur, &
in ea datum pun-
ctum A) conſtructio per aſymptotorum inventionem facilè
abſolvitur, ut oſtenſum eſt à Fl.
de Beaune in Notis ad Geo-
metriam Carteſii.
Cum verò habetur x x vel y y in æquatio-
ne, vel utrumque nihilominus ad aſymptotos rem deduci
poſſe, &
quidem brevius quàm ad diametri laterumque re-
cti &
transverſi inventionem, oſtendemus hoc modo.
Sit æquatio ejuſmodi reducta, y = l. {nx/z} √mm. ox + {ppxx; /gg}
ſemper enim ad hos terminos reduci poteſt, nempe ut y al-
tera linearum indeterminatarum, quæ applicata eſt ad poſi-
tionem datam, ſola ab una parte æquationis habeatur, ab alte-
ra verò non plures termini quàm hîc inveniantur;
nam ſæ-
pe pauciores etiam eſſe poſſunt, cum ſoli neceſſarii ſint
+ {ppxx/gg} cum alterutro horum mm vel ox.
Quum angulus A B C datus ſit, ducatur per A punctum
linea X Y quæ ſit rectæ B C parallela, &
in ea accipiatur AI
æqualis l, idque ad partes B C, ſi habeatur + l in æquatio-
ne, in contrarias verò ſi habeatur — l, &
agatur I K

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