FORMVLARVM DIFFERENTIALIVM. 22 s 



Euldens Tero efl; hunc mukiplicatorem quaeftioni 

 fatisfacere , quum integrale noftrac formnlae inde 

 prodeat ^, ""* ^ . Quod reliqnas ibrmulas integrabllc» 

 attinet , (jbfcruare licet efle : 



Siqindem multiplicator iam inuentm fu Cprjjr^,^, 

 integraii exitknte ^rzjiri 7 inde qaidem mox patet ; 

 gcneralcm formam multiplicatorum hac expreffione 

 contineri (pzz^^-^-, r:(— ^-.^). Pcriculum igi- 

 tur faciamns hunc multiplicatorem immediate ex 

 Boftris. formulis eruendi. Et quia (P nunc confide- 

 lari dcbeat \t fundio trium variabilium a: , j' , « 

 ponamus Cp — (p'\|^, vbi CP^ binas tantum variabiles 

 j et z inuoluere concipitur , vp autem omncs tre* 

 X , J ^ z. Tum vero crit 



iz['^) zi ^ dz{'^) + ^^dz{'^) proind* 



inde autem conlequimuT 



:::-4(p'vK yfl^H-xr^^^^-C^^^Cp^+cp^^^vtyXAirp+jrsp'), fiae 

 x|/#'(«'+r')4CpVv{.(2*+y>Cl)V;t(g)(«'+/-;»r/^-;s«p'| 

 ^-A^^^iydjf-^zdz) , 



£ c 3 qaam 



