= (is) = 



eam qiiantitatem, qiine oritiir, fi fiiiKftio V, folam .v pro varia- 

 bili fiimendo, totics fiicccniiic differentietur, qiiot vnitatcs in 

 indice X continentur , limulque Abique differentiale dx reiicia- 



tur. Eodem modo illc charader: — . V, dcfignabit eam quan- 



P 

 titatem, cuae pcr totidcm difFcrentiarioncs rcfultat, dum fola 



p vt variabiiis traclatur. Hinc igitur illa fignandi ratio fcquenti 

 modo ad formulas vfu receptas reducctur: 



II. Vicilfim antem intcgrando iftc cliaradcr: — . V 



X 



dcfignribit eam quantitatem, quac ex continua intcgratione X 

 vicibus repetita oritur, dum (ola .v variabilis accipitur^ et pa- 



ritcr hic charader: — . V, cani quantitatcm fignificat, quac ori- 



P 

 tur pcr continuam intcgrationcm A vicibus rcpctitam, dum fo- 



iii p variabi is a« cipitur. Haec ergo fcqucnti modo ad formas 

 vfu receptas reuocabuntur: 



J-.V=/Vdx et i-.v=/va/), 



l^^.V =zfdxfVdx et -il.V=zfdpfVdp, 



■^.V=fdxfdxfVdx et ^l-y^fdpfdpfVdp. 



ITT. At quoniam omnes quantitates per integrationcm 

 inuentac pcr fc funt indctcrminatae, in porterum pcrpe:uo om- 

 nia intcgralia ita capi llatuamus, vt cuanclcant pofito vcl x-O 



vcl 



