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# Title: Leibniz-Handschriften zur Mathematik LH 35, 13, 1
# Folio 246r, page id 00068196:0487
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Z
Ergo Xlogx= o a. logu seu
(+)
Sax: x = a sag: y E Zdx: X + dZ Sax: X = ady: y
et, Zddx: X + dxdze. X = Z   x:
a ddyus : y - a dy: gy
eR Sax:  fiet:
it per 4 et 5 collendo
dZddx: X +Fdxdz : x = Z dx dz: xx + adyddz: y - Zdxddz: X
e
d ed = a dque ady: y - a dy dz: yy
si felciamus ddzue0 ex aeq. 5 fieret.
e
 constat genecalter
xaddys: y - acu. y
Unde sequitur posita du constante fore
dd Z. log. X = Z ddX 1x + 2 dx d Z - X X7ddx - 2Xlxaz - X 
sin sin adg:y faciamus constantem = ded
C XX
fiet: Xde (1 X7 dx adzue + Z aX dZ = XZ dq ddx = 2 X dx czue
sed t si faciamus, ut dixi dam o fit
d posito
2
a
C 2y fit a dd log: y =
dd log. X
ee
posita XV. = y
XZ ddx - 2X dXdZ - X Z dx,: X
Adeou absolite dd log. X.
= XZ ddx - 2X dX dz - xZ aX, : aX
a
12
posita dZ constante
A (+