Formula diifcrentialis > ~'>bl 



v"r-l~:;^ aequalis fiet- 

 -^^-^ §. 14, pofito .^ — o, ec 2; — ^, -'if' 331»5*I 



Differemiale autem 



.( - 



— -^ "■ fiet — ^-^ 



VCiaa— 1; *■ — V. a..V i (.1 Tjr co/. $) 



s 



2 ~ 



y /2. coi. 5 cp ' 



ct hi quidem funt cafus, pro quibus natiiitur ?fi — 9, 

 Pro cafibus autem , Ybi »z~oo, negorium per re(tu(?lione$ 

 fupra commemoratas non prorfus confici poteft, Sie il 

 formulae differentialis ^(l^rTi) integTalp ope §. J3. quae-- 

 ri deberet, fubftitutio z ~ y^H+ti/.cp) fi^»^^? incongrua, pb 

 y z« ~ 00, Si vero ponatur 



gVfe' _ i) --^•4^ rr l+fi^f^, fiet 



> / 3 4- e C8J. cp jin^ vj/ ' 



d $ , — d vjy 



V (,i .+. 3 e co/. 4) +• e') ' y (j •+-2eco/. \j;-4-tfPJ > '-'^ 



vnde pofito ^ — i , effe debebit 



j2 y (1 -i- « j2 2;) y 2 (1 4- cof. >4^j 2 cof. i^* ^ • 



pofito 



5r rr - .^.^ (^.^.^ ^^^. Eft vero ob' ;Vrt 



^,_-^^ ,._,__. gj y«^(tf'-j) = yo., 



Tndc pro cafa praefenti 



Formu- ^ 



