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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 177, page id 1677894601:0369
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PROP. IV. THEOR. II.
Si CurrA abSCICTa AB SEZ, _E A pTO C L, FZn Y ∞ZIn
-eC. Scribatur R, ∞ pro K. ]. I2n ] Mx2n. ] _c. Ccri-
BatuES; SE autem area CUEVA 2R. S: erit Or-
dinatim applicata BC. =
Det ) n Fk 2.
FB
un Cl2.
2anSk22n. X . . . . . F . . . . . -
8
--2g
)en
1- 211
0
un
I 2n
-2uB
10
In 2. 1R L1G42
um Bmzins
= Zun
Demonstratur ad modum Propolitionis superioris.
PROP. V. TIEOR. III.
Si Curvae abscisa AB SIE Z, XC prO C F (7N- ]. 5227
F RZ3n ] XC. SCribatUE R: St autem ordinatim ap
plicata 2 R~ in a Y b7n + C22n ] d23n ] QC. X P0-
natUE D =F. F F a = 5. 5- 2 = F. C  a = V, QC. erit arCa
BR iN
2 +b sFA iC FB tEA
F -F 2, C
28 -. AB
x. - 2,C
221.
id =3FC. = BB vHA
Y  = 3,C
in ) _C. UIBI A, B, C, D, _C.
A d a
denotant