FORMVLARVM DIFFERENTIALIVM. 173 



Si igitur hi valorcs ipforum M, N, P etc. ita inter 

 le comparentur, \t finguli termini fingulis acqucn- 

 tur , inde fequcntes f-icile deducentur aequalitatcs : 



/d |X,__/^ V >,. (dn\^(dTr\. (djJ.)-(dji_\ (d\i\_fdT>. 



in quibus ipfum criterium integrabilitatis refidere 

 antea cbfcruatum efl. Verum quum excipere lice- 

 ret ex aequalitate binorum valorum ex : gr. ipGus 

 M non ftatim fequi in vtraque expreflione fingulos 

 tcrminos , qui iisdem litteris /), q, r etc. afficiun- 

 tur , inter fc cnb acquiUidGS , iam aliam adiiciamus 

 dcmonftrandi rationem huic obiedioiii non obnoxiam. 

 3. Quum enim fit; 



tum vero 



l|-p=(ra^,)+P(Jf4) + ?(|^p)+'-(J|j;)-+'"i|3^,)+(fe') 

 (jl)=(irf,)+?(l7f,)+?(J-75i)+'-(j7i)---+«'iin)+(^?«'=- 

 (H)='^-^'y+?(J-i^)+?(f-|;^P+Ki|^,)...-h»(j-i^,) + CS) 

 (H'=(|:^,)+P<^)+?(||5ip+r(i|f,)...+»(i|^,)-(-(J,') 



(j-;)=(^,)+f(:-if,)+?(2-Tf;+'-(j-i4'-+«(i'^T;+(K)+(0) 



ttc. etc. 



Y 3 prae- 



