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

Table of Notes

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229496CHRIST. HUGENII meratoris partis alterius e carentes, omitti poſſe, cum quan-
titates inde ortæ eædem utrinque eſſent futuræ ideoque de-
lendæ.
Quare in terminis poſterioribus ii tantum ab ini-
tio ſcribendi erant in quibus unum e, omiſſis omnibus reli-
quis, ut æquatio hîc futura ſit iſta
{bx3 - ccxx - 2bccx/bcc + x3} = {3bexx - 2ccex - 2bcce/3exx}
Hîc jam multiplicationes alternæ per denominatores in-
ſtituendæ eſſent ad tollendas fractiones.
Verum examinan-
do diligentius quænam futura ſint harum multiplicationum
producta, aliud adhuc compendium inveniemus, &
nec
ſcribendos quidem omnino eſſe terminos poſteriores:
quia
enim deſcribuntur ex prioribus mutato x in e, præpoſito-
que numero dimenſionum ipſius x, non difficile eſt col-
ligere ex ſolis terminis prioribus quænam futura ſint iſta
omnia producta.
Ita quoniam propter - ccxx in prioribus, habetur -
2ccex in poſterioribus;
& propter x3 in denominatore prio-
rum, in poſteriorum denominatore eſt 3exx;
facile per-
ſpicitur utraque producta ex - ccxx in 3exx &
ex -
2ccex in x3, quæ ſunt - 3ccex4 &
- 2ccex4, eaſdem
literas habitura, ſed diverſos numeros præpoſitos 3 &
2,
idque inde fieri quòd in termino ccxx unam dimenſio-
nem minus habeat x quam in termino x3.
Itaque & au-
ferendo poſtea ex utraque parte æquationis, - 2ccex4, ap-
paret ſuperfuturum - ccex4 à parte terminorum priorum.
Quare ab initio hoc ſciri poteſt, multiplicando tantum in
terminis prioribus - ccxx numeratoris in x3 denomina-
toris, unumque x in e mutando, ac productum ſimplex ſcri-
bendo;
quia differentia dimenſionum x in iſtis duobus ter-
minis eſt unitas.
Eadem ratione producta ex - 2bccx in 3exx, & ex -
2bcce in x3, quæ eaſdem literas habent, ſunt enim -
6bccex3 &
- 2bccex3, habebunt numeros præpoſitos

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