18+ DE CRITERIIS INTEGRABILIT. 



quarum ncquntioniim rntib cx difTertiitionc tupcriori 

 perfpicua rcdditux. 



p. In formulis difTcrentialibus littcrns Graecas 

 inuoluentibus , earum vnlores §. cp. Didcrt. 1. ;illa- 

 tos introducamns , quo fndo hns fepteni obtii:cbimus 

 aequnlitates , criteria intcgrabilitatis propofitae for- 

 nuilac \''(ixdy complecTiontcs : 



I. sN-.^j-^O + C-/^^ 



II. +N- = fJi)-1-(li|5) 



o 



<^y-° 



- \dy' 



III.sN-.C^Il^^-C^^^^-irro 



I V. ^ N - 3 'lli) -^ ^ (li^r) - &) " o 



-3^i^)4-.(j4^) 

 VI.6N-3(^^)-4-^fJ4j;^-(^) = o 



VII.4N-3(l^; + ^(^,'f]-(^^') = o. 



Si vero fc.incntes iiim inflitunntur combinationcs 

 V — 2 l ct VT — 2.111 conlequcmur : 



Vlte- 



