•>¥^ ) 81 ( ^- 

 Vnde patct pro qiiouis exponente integro n fore 



C 28 'O _ «n — 2 



5 — T-S. 5 • - - - - -^ , 



prorfus vti in theorcmate ftatuimus, 



Scholion. 



§. p. Qucmadmodum hic pro cafibus, qnibns 

 exponens n eft numerus fradlOs, fummam nortrae fcnei 

 per formulam inccgralem repraefentauimus, quae iam in- 

 voiuit periplieriam circisU tTj ita etiam plunbus modis 

 valor eiu«-dcm lummac S per alias formuias integrales ex- 

 primi potefl, quarum aliquas hic adiungamus. Prima fci* 

 licet eft 



II. 



(2;z + \)J x"" dx{i - xf 



Vbi qiiidem, vt ante, has formulas integralcs a termino 

 ^ — o \sque ad Jf — I extendi oportet. Ita pro cafu 

 n — j prima harum formarum praebet S— ^-j-^—\\ fe- 

 cunda vero foimula dat S — j-—-^-^'-, tertia porro formu- 



f X d X [i - x) — \ X x —^ x^ — \ ^ 

 cx qno fit S — '• 



Ji&a Acad, Imp. Sc. Tom. V, P. l h Confi- 



