FORMVLARVM DIFFERENTIALIVM. xp7 



muUiplic:Uor qaacritus igitiir crit 



g;^jx Y:(^y ^i^'1* + j e'^^"". z d x) 

 prorfas \ti fapra docuimus. 



17. Pra formulii diffeientiuli : 

 CLxdy-^-^ydx-^-x^^riyxdy^^jdx) 



quacramus nunc multiplicatorem , quo integrabilis 

 reddatur , pofito igitur hoc multiplicatore 1=: (j> , 

 habebimus 



Vz=.(^{o.xp-\-^y^x''r{yxp^$y)) 



idcoque diflferentiatione inftituta , fcqucntes prodibunt 

 Talores : 



TA:iz{'^^)iaxp-\-^y-^x^y^{yxp-\-By)) 

 ^:=i{^){axp^^y^x-y^{yxp^By)) 



P =: CP ( fl :v 4- Y ^™ "*" >")♦ 



Quum igitur cffe debeat N - ^ = , hinc dc- 

 ducetur : 



+ (pf^-i-A-«y-(«Y.rp4-(«^-i)5») 



et quia- 



Bb 8 (t)((3 



