n-* 



CVIVSDAM INTEGRALIS. 99 



Demonflratio. 



Cum fupra ( § 4.. ) oftenderimus efle : 

 habebimus fi loco « (cribamus 2 n 



Cf+g)(f+^i).--U+"^"grg'\f+--m)'' ^ ^ 



DiuidiUiir nunc prima acquatio pcr fccundam , ac 



prodibit ifta tertia : 



C/+O/ +1 g)(/4-^«+2^g) . . (f-\-2n g) _ g\f+ 2 ng) fx^"dx(i^x S)^- 



(«-i- i)(«-h 2) 2«" z{f+ng) Jx'-'Mi-x^y 



At fi in prima aequationc loco / fcribatur f+ng^ 

 orictur huLc aequatio quarta : 



I. 2. 3 » ( f+ ng)ug , 



{f+(n+i)g){f+[n+2)g).Af-\ing)-g^U+^^^gY ^ ^ 



Muttipiicetur haec qunrta aequatio per illam tertiam 

 ac reperietur ipfa aequatio demonftranda : 

 I. 2. 3 ..... « ^ , fx^-'dx(\-xsy" 



C o r o 1 1. I. 



13. Si in prima acquarione ftatuatur/— « ct 

 gzr I orietur idem producftum : 



N 2 t]Ua 



