De D1.^TA^'T!1S MAXIMIS ETC. 



;4j 



r 



7 



(l)-(K)=» 

 (S)-©('|)=» 



Quando aiUem variabilis absolula sit j^, in Ellipsi alque Hy- 

 perbole obtinebitur 



(D') 





„ /dx\/d^x\ ld^x\ 







dj 

 ldx\ ld^x\ 



,d\ 



l^('l)CT>^f)-'(|)=- 



in Parabola vero: 



Si per aequalionem (6) (n. 8) 



^ ^o(:i)=[-©i('i) 



eliminetur I ^^\ ab aequalionibus dilTerentialibus tertiis Seclio- 



num , abi x pro variabill absoluia habeatur, erit: 

 ldy\ld''-y\ 



©(D 



dr\' 



\dx) 



T. IX. 



Z.)/f^Ul^te) =0: 



69. 



