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# Title: Leibniz-Handschriften zur Optik und Dioptrik LH 37, 2
# Folio 75v, page id 00068531:0150
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quod si substituatur valor et
 praecedentis, habentur semper
Et ita porto. repile hoc fier
Fradii nitro sunt convergen
el divergentes.
praeterea ea ut contrahatur
calculus pro mechanica investigandum
est focus per appropinquationem
quod fieri potest follendo X. non
quidem vere, sed ita, ut id quosans
sit vulde parvum. seu ut x multi
tur per quantitatem valie diminueu
seu fractionem. Ita reperto foci
ippirebit modus postea component
ati B s ad s. B si B 5.). e L X Cbo r ( M 5. ~
utile substitui hunc vatorem ipsius
ubius inph et habebitur plenus
valot ipsius h.
curva.
vitra
Caterum semper  y A S N. sin (), B ()
+ et primi quidem X valor non invenitur
sed debet relinqui adhuc. Secundum vero
X et tertium, et quartum habentur hoc
hodo : (X)  ~ +(E) (2) - 1h) p, X 3 1 2 h 13) b y
(X) p (X) +hB py7 - phD
(X   (X) +dh B rem = ph B
(7)
seu ()  X +stet riXhi u  acte - X + h reria
(
(3
2
(3)
fietque
(X) + t) (S) - ()
X + (h)
(si. Pe
(4) + 26) h abe) s _(SZ ∞)
X + 2X (h) + ( 2)
3+ X + 2X h) tchi)
X +Et , (52 = h  yt
314 X + 2xch Fte
filper conpendium X + alhi) 3 X, 14 157 - (1) ei
Ce2
sit (X) + 2shi) Y () + (627 3 cone s )coth 2) et 4 h) est
et
(X)H
co2
c04
c0+
(cor 175) - co ta) gr + t7 yd = 1h y
2
() R y (c 72) - cork2jus + tidu  - tyye + Ch, y co
Xco + (h) cor
explicentur rursus co et  et habebitur
valor ipsius () pariter et ipsius (7). et
eodem modo valor etiam ipsius (X) et ipsius (y))
item ipsius ((XB et ipsius ((Y). Quos
valores ubique inserendo in valoribus ipsorum
(PhV).. PhB. h. p. ) acidenique in valore 
(hspro y ponendo S52-X habebitur deniue
valor ipsius (h) per solam indeterminatarum X.
quo obtento ponantur omnes termini
ipsius oei termini ipsius X. nihilo
aequales, quod si fieri potest, poterit
tunc poterit poterunt etiam omnes radii
paralleli ope circulu in unum punctum
colligi
sit s +2Xh) + () BCot
et X +(h) A_ Y
 sat n) (S ) - seti
1 5 + h)
plenus valor duarum refractionu
ut calculo generali pro qualibet
Sro eticulu utite praemila
pro ad bulorem strimi (h,
expli tac qui sit cum