QVAPAM DTFFERENTIALT. iii, 

 ceftt^ hanc efle pFOprietdtem nuper demonftraiii , vt 



dyzzpdx, dp^zzqd x^d qzz r d X etc. 



quo pado eae femper ad talem formam W dx re- 

 ducuntnr , in qualittera V \tcunque q.uantitates x^ 

 Ji p9^i ^ ^fp iniplcabjt^ tam futurum fit 



ac viciiTim quoties b.aec conditio locum Iiabeat , to* 

 ties qubque formulam V dx efTe integ.rabilem. 



XI. Hanc igitur quaeftionem. nunc euoluendam 

 fufcipio. 



{>• . i Inuefiigare emmodi fmdtionem Z binarunt varia^ 

 Wium JL et.j', per qnam aeq^atio nojira 

 ydy-f- M yd X -i- N d xn: o . 

 Huifa fiat integrabilis i- . 

 Hoc ergp. caia ^rit V ::= ^^-fi^ti? vnde colligitur 



ldY\ p y P C<i3\ ^ M (M^-t-N) /dZ \ 



KdTy — X XT.^dy'~ Z^ ZZ Vdy^ 



tum vero ob \^~) zz ^ porro diflerentiando repcritur 

 Cum itaque fieri op»rteat 



^dy ' dx ^d f V — ^ 



habebimus hanc aequatiQnent pra defimeoda fundio- 

 ne '2 ■■i.-,yn 



M __ (My-4- mYi 2>t _t- JL- rl?") O- 



Z ~"Z Z ^d> '' ^ Z. Z "^d x^ 



feu M Z; - Mj^ ©-^ (111-4-^ (S= «^ 



