70 S P E C V L A T I O N E S 



ac tiim erit 



V—fdzii-zz) = et q — Cdzii-zz) ' , 

 vnde pro a ct ^ fequentes ca[iis euohumu'?. Sit 

 primo a :=■ 2. et 6 =r i erit P — A fin s - - 7 et 

 Qms — i> i^eooue — — ^ vude colli^imub fore 



J dx . *_-^ ^ / !L. 



§. !<?. Sumamus nunc c. — 3 ct ? — i , vt 

 fiat itaCa-— I ) hincquc formula noflra 



integralis crit/y-|(.v- i ), cuius valnn.m nouimus 

 effe n: / £ at vcro ex formula noftra mMurali ent 



V:^: iti^^^ldzV^-zz^f^tl.^-JJrlU 

 At \ero pcr rcdudioncs notas cft 



r z zd z — 1 f d z 



■> V 7—-Z z ' V 1 —x. - ' 



ficque erit 



O — ' / ^5 — • •" 



vnde fit ^ — (^, qui \aIor [perfcflc congruit cum 

 ante afl'i^naio, 



§. 17. QuQ iam in quantitatc P non occiirrit 

 cxponeiis a , in altcro vero (^ tautum S occurrat , 

 (Uf3Lrius tiicorcma ita iii duas partcs dillribucri; licc- 

 b.t , vt iit 



Jr;,-—n = C-irz^-'dz{i-z^'^) - et 

 dx x^ - • L- '5 



Jjx-i:^n-C-lfz''-'dz(l-Z-^) - 



vbi 



