^S-S D1S::ERTAT10 DE VROBtEMATIBrS av. 



,nem aeqiiatione ^xpellatur. Koc nnodo f^icillime inte- 

 gMwr j(ix-- Xi/j-ayilx^-h^yly ^' f"™ ^^^^^ aequatio 

 differentictur , fofito </x coiiftanti, oritur tfxdj — xddy 

 — d X dy — "-^^/i^-^^ , Acl, abitaib acciaiilis dxdy, 

 et ftcla diu-ifione per ddy, ta]:s , ~ x^ [d x^ -\- dj) 

 •znady^ quo dcinde facik icoucitur, ct iiitegratur , •vt 

 j)rodeat^ 



-Q--y{<i^-x)-j. 



PHYSICO 



