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

Table of contents

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[71.] PROP. VI. THEOREMATA.
[72.] SCHOLIUM.
[73.] PROP. VII. PROBLEMA. Oportet prædictæ ſeriei terminationem invenire.
[74.] PROP. VIII. PROBLEMA.
[75.] PROP. IX. PROBLEMA.
[76.] PROP. X. PROBLEMA.
[77.] CONSECTARIUM.
[78.] PROP. XI. THEOREMA.
[79.] SCHOLIUM.
[80.] PROP. XII. THEOREMA.
[81.] PROP. XIII. THEOREMA.
[82.] PROP. XIV. THEOREMA.
[83.] PROP. XV. THEOREMA.
[84.] PROP. XVI. THEOREMA.
[85.] PROP. XVII. THEOREMA.
[86.] PROP. XVIII. THEOREMA.
[87.] PROP. XIX. THEOREMA.
[88.] CONSECTARIUM.
[89.] PROP. XX. THEOREMA.
[90.] PROP. XXI. THEOREMA.
[91.] PROP. XXII. THEOREMA.
[92.] SCHOLIUM.
[93.] PROP. XXIII. THEOREMA.
[94.] PROP. XXIV. THEOREMA.
[95.] PROP. XXV. THEOREMA.
[96.] PROP. XXVI. THEOREMA.
[97.] PROP. XXVII. THEOREMA.
[98.] PROP. XXVIII. THEOREMA.
[99.] PROP. XXIX. PROBLEMA. Dato circulo æquale invenire quadratum.
[100.] PROP. XXX. PROBLEMA. Ex dato ſinu invenire arcum.
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page |< < (429) of 568 > >|
156429ET HYPERBOLÆ QUADRATURA. omnes ſeriei convergentis terminationem eodem modo eſſe
compoſitam ex terminis convergentibus primis quo ex termi-
nis convergentibus ſecundis, tertiis, vel quartis, &
c.
PROP. XI. THEOREMA.
Dico ſectorem circuli, ellipſeos vel hyperbolæ A B I P
11TAB. XLIII.
Fig. 1. 2. 3.
non eſſe compoſitum analyticè à triangulo
A B P &
trapezio A B F P.
Ponatur triangulum A B P a & trapezium A B F P b: ma-
nifeſtum eſt ex prædictis trapezium A B I P eſſe Vqab &

polygonum A B D L P {2 ab/a + Vqab}, item ſectorem A B I P eſſe
hujus ſeriei convergentis terminationem.
ut ex ſeriei termi-
nis auferantur ſigna radicis &
fractionis, pro a & b primis
ſeriei terminis convergentibus, hoc eſt pro triangulo A B P
&
trapezio A B F P ponantur a3 + a2 b & ab2 + b3; erunt-
que ſecundi ſeriei termini convergentes, hoc eſt trapezium
A B I P &
polygonum A B D L P, ba2 + b2 a & 2 b 2 a, di-
co ſeriei convergentis (cujus primi termini convergentes ſunt
a3 + a2b, ab2 + b3 &
ſecundi ſunt ba2 + b2 a, 2 b2 a) termina-
tionem non eſſe compoſitam analyticè a terminis a3 + a2 b,
ab2 + b3:
ſi enim componatur prædicta terminatio analyticè a
terminis convergentibus a3 + a2b, ab2 + b3;
componetur etiam
eadem terminatio analyticè &
eodem omnino modo à termi-
nis convergentibus ba2 + b2a, 2b2a;
& proinde eadem quan-
titas, nempe prædicta terminatio, eodem modo componitur
analyticè ex terminis a3 + a2b, ab2 + b3, quo componitur ex
terminis ba2 + b2a, 2b2a,
22
a3 + a2b # ab2 + b3.
ba2 + b2 a # 2b2a
ſed nulla quantitas poteſt
eodem modo analyticè com-
poni ex terminis a3 + a2b,
ab2 + b3, quo componitur
ex terminis ba2 + b2a, 2b2a, quod ſic demonſtro.
ſi analy-
ticè componeretur quantitas ex terminis a3 + a2b, ab2 + b3

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