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# Title: Leibniz-Handschriften zur Mathematik LH 35, 13, 2c
# Folio 137r, page id 00068199:0273
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pro
langentialibus quadhaturandis
aequatione
Data Formula per in qua a, y, X, dy, dx,
sumatur valores ipsius y  et ipsius Xx.
cam assumtise, et in quas ingradiatur lrtbra
litera V, et quidem ita ut ut in formuta
data evanescat v, manente du. habetur
quaesitum. A
dy
aequatione
Aliter: data formnta in qua a, y,X
du
assumatur valor y et X per alias
sed itant
utcmqe ut V, Z a, sieat i pro literis y,X, dysdx
ed
ubitiluenio valores pra neseat a
13
dat a= Xrg, TX:7;  Ly: dx eat a = XiZ1V), a= y; Z;n
Ex 2 et3 habetur dx: dZ = dz  do: dz; X. Z: v: , ex
et dua 23 av.dz. 109
+ 
32nC
Ergo frel
dy: dx = dv: dz; X, L. Z. VC: dv: dry
unde a(7mo) a = X
ap:ar d ∞o.L.
ne
dvidz; Y: LiZ. V
ex 2 et I ft 18) ubi abest a et ex 2 et 3 fit (9) ubi esiam
abest a, hinc habetur valor ipsiu
X et vator ipsiusu
quo substatuto in aeq. 7. debet tolli simul posse a