■ i6 ■ ■ 



§. ij. Dividatur minc haec fornia in diias j^aites, 

 ponendo 



f f> ' a .^ f — pdq) — ^ p et n qir^p—pHo ) — ^ Q 



i p^ — ■/■' ' 



vt fit riT.^-^dP — I 6' Q, hicijue ftatini patct, fi in piio- 

 re formnla loco pp?p fcribatur — ^'/'■^(/i ^Lnn prodirc 



^ p — - nq<pi -*->l^) 



pj -,,J 

 Qiiia veio eft /j^ -f- q' — 2, idcoque p' — - — q^, clemcn- 

 tum c P pcr folani liLleram q ila exprimetur, ut fit 

 ^ P — JJ- . 



l — qi 



5. 22. Simili modo fi in allcra formula 3 Q. loco 

 qqB(/ fcribatur —ppdp, piodibit D Q.— ^iiCJIi-*-^ , quae 



crgo ob rclalirinem inler p el q fuppfdital hanc fornuilam: 



— t>i ^i i — p 

 llis igitur coniunQis crit 



^ 1 - j j I — 9J ' 



ficqnc toturn nc^otium perduflum cft ad duas foimulas dif- 

 fcrenlialcs rationalcs , quas ergo pcr lo^arithmos ct arcu» 

 circulares intcgrarc licct. 



$. 23. Ad Jiacc intcgialia invcnicnda ftatuatur 



i _. v_ 1 o 



I — fj i — p i-(-f-fpf' 



ubi notctur fore 



Fnr ^~P rr 



1 — pj 1 p -»- ? p * 



pofiio I — p — o, five p~iy undr Iit F : - \ lum vcro 

 eiit 



(1 — i-«-f — f p i 



i — pi i — /.* 



po- 



