rO.lMVL. DIFFERENTIALIVM. 143 



/^'"^Nfc L : ^ L 



I. 2. 3 .... //i — I 



/ Tv x^-' d x 



* . • . H , 

 I. 2. 3 . . ^«— I 



formiilarum 

 f^dx-i^^-^^dx', f(ldx-/^^~^Vdx^p'^^dx etc. 



fequentes hinc deduci poterunt transfbrmiuiones. For- 

 mula 

 yP^a'-/-'N.^.v erit cr/P^Av^.v/N./ji'+/'N.v^:v, 



quum igitur iam conftet xfNdx yerum effe inte- 

 grdle , Cequitur quoque formuLim 

 dx{V-\-Nx) 



integrabilem efle. Porro quum integrabilis fit haec 

 formula 



(ld'X'-f? dx-^-f^-^N dx, 



cuius integrale ita repraefentari poteft : 



/Q^.v-.v/P^;i^+-UYN^.v 



^fFxdx - xf:>^xdx-h-i!,fNx"dx 



inde quoque deducitur integrabilem efle fequentcin 

 formulam : 



Simiii ratione demonftrari poteft integrabilem efle 

 debere formulam : 



dxiK + Qx-^J-Vx^+r^Nx) atque adco Uanc: 



J X 



