/ 



tenfli, femper nequabitur huic feriei infinitae geminatae : 



( $n~t _i_ Jin.i6 i Jin. 3 6 i . Jin 4^ etc> ) 



I J n-\- p v.n-\-p 3 n -f- £ 4 n -t- f> * f 



^77 ) _{_ ._$& _}J £___ _f- ____ -j- J»l__ etc. ( l 



( ' n — p ' an-f ' 3 n — p 4 n — p ) 



quae binis homologis r coniungendis contrahitur in hanc feriem: 



__I C ___*____! u 2 /' n - 2 3 , | ,. 3j/n. 3 . [ . *Jiv.. 4 9 , i , g( C \ 



//n.3 ^nn — £p ' 4 nn — pp ' 9 nn — pp ' 16 ?m — ££ '^ 



XIT. Hinc iam manifefto pro cafu, quo ponitur p _z: 

 ^ -j/ — 1, ifta feries infinita exoritur: 



___ f ______ —U 2 /'"-^ 1 . 3jin.3& . 1 , 4/tw- 4 9 1 , e t C \ 



Jin.9 ^nn-hqq ^nnri-qq ^^ 9 nn-t-qq 16 nn-t-qq '' 



quae ergo exprimit yalorem huius formulae integralis : 



d x cof. q l x 



. . . . 



x x n — 2 cof. -f- x~ n 

 fcilicet ab x __= o ad x __ i extenfae , ita vt iflius feriei fum- 

 ma finito modo expreffa fit etiam 



» fin. V —15 +1! / ' 



Quin etiam facile intelligitur hic quoque angulum imagina- 



rium accipi poffe. Vidimus enim pofito __ (p ]/ — i fore 



e —Q e -*-$ 



fin. __ . , hincque in genere 



2 / I 



fin. X I __ f — -_ 



i y — i 



~. ,. n cD r . fin. X f x — f~ x , ,. 



Quare fi ftatuamus ^ __/, ent — _ 1 — — , rnde fe- 



ries illa fatis concinnam formam nccipiet. 



XII. 



