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# Title: Qua Continentur De Angulo Contactus & Semicirculi, Disquisitio Geometrica. De Sectionibus Conicis Tractatus. Arithmetica Infinitorum: sive de Curvilineorum quadraturâ, &c. Eclipseos Solaris Observatio (shelfmark Leibn. Marg. 84:2)
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rith methea Insinitorum.
PROP. L. XXVI. Coroll.
I ADB Parallelosrammi rectae BD in rectas DB se-
miparabolae ague-alta ADB respective ducantur, re-
et angula producta e
runt series subsecun.
danorum; e mediae.
proportionales, series
subquartanorum (qua-
les sunt rectae Para-
boloidis Biquadrati-
ei DF.)
Hoc eAt, Teries R.
qualium (cujus index
0) in Teriem Cublc.
cundanorum ( cuius
index Z) respective du-
cta efticiet seriem
icem sublecundanorum (quia = F O = =) et mediae proportio-
nales quippe lublecundanorum radices quadracica) erunt sc.
ries (ubquarcariorum.
PROP. LZZVII. Coroll.
C. T ADB Paralleloerammi rectae DB in rectas DB
Complementi Semiparabolae respective-ducantur; re-
etancula producta erunt series secundanorum: media
autem proportionales, series primanorum (Trianculum
consrituentium, ADF.)
Nempe, series sEqualium in seriem secundonorum AC
ducta, dac seriem ceiam secundanorum (quia c + 2 =2)
eorumque racices quadraricx lune series primanorum.
PrOP: 76,77.