yS Opusccla 



Pcnalur x-=e ideoque /o».j:=i, erit 



111 1 1 



e =r 1 4- 1 + - 4- 273 -t- 2X4 -*-2X4 J -+- 23X1:6 -^ *■'"=• 



DilTereniiatione aequationis (a) emergit 



dx ci X d X dx 2d X log.x "id x log.x"^ 



tug.x' 

 ^ d X log.x 5 d xlog.x 



> etc. 



2.3.4.5.J 2.3.4.5.6.x 



Ahlalo corauni factore dx, et ducta aeqnatione in quanlila- 



Posilo J7^e, ideoque Iog.x=:\ , habebimus 

 12 3 4 5 



o=:_i 4-- 4-273+2X1+ 2X43-^ 2-xrr6-^^'" 



Differeniialione aequationis {Ji) emergit 



dx Idx Idx ^dx Idx 2.'i.d X log.x i.Adxlog.x 



.2 



%-^ loTx' l^.x'~~ ''^'^S-^' 2.i-^^ 2.3.4* 2.3.4.5.x 



1^5. .<, .1/5 



A.S.dxlos^.x 5.6dxlos.x 



etc. 



^ 2.3.4.5.6.x ' 2.3.4.5.6.7.x 



Ablato corauni divisore dx, mulliplicatione quanlitalis x ha- 

 bebimus 



.r 2x 2x _ 2 _2 2.3/og.x 3.4/^^ 4.5/3^'^ 



5.6/og.x 

 '^2~Xl5X7 ■*-'=''=• ^^) 

 Ponatur x=ze, et ideo iog,x=i, habebimus 



2 2.3 3.4 4.5 5.6 



" = ^-^ 2:3 -^ 2X1 -*- 2.3X5 -^ 2"XIX6 •+ 2X1:5X7 -^ ^"=- 



