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# Title: Leibniz-Handschriften zur Optik und Dioptrik LH 37, 2
# Folio 112r, page id 00068531:0223
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Est ergo ds aequ +
+ Co
 2V X+Z2
2Nb-26X+X+C= 24 + g
i jam sare ds aequ sN in figura dx aego RS. infinite parvis
et ret ca N
A et t
SR
 seu q
seu ua
e7 
N
Caequ.
idem cum P
T -2bX +C g  +cor XXX
2 IxAZ, Y- 262+C 1 ECy +yr
sed ponendo punctum esse ubi ordinata est minima, erit tangens N
paralleta ordinuta  D B seu recta DF erit, in finita, ac proindem VD
erit
erit qntitas euquantitas finita peus infinitam divisa erit infinite
parva, ac proinde fiet
F b - 2bX + X + C2 2C7+ + Co IXt aequ.o
sive erit: d cqu - 1 b - 2bpA X + C 2 + 3 aso BC
c
YX. +8 aequ. AB
id est AB eut ad BC eritu ad AB  ut ed resistentia
medii per quod transit radius BC, est ad  resistentiam
medii per quod transit radius AB
sen c
Erle eoz
fier
vi
tr
Sed hoc est absurdum, nam si
punctum C positum fuisset alibi in recta BC verbi
gatia in (C) tunc punctum quaesitum non fuisset B sed
aliu
pellii
Hypothesis de Lumine ex Vossio cape
 in eodem medio aeyi radius
verus aP vel SY. vel fy ad
ad apparentem a9
si
+d
semper eandem servat rationem.