i8o EXERCITA TlONES 



quae reroiuitur ih hanc feriem : 



-~L.4-_L_ ' - '. ' ._ _ ' ' - ,- -L p»r 



vnde valor ipfius 2 in has feries transformatur : 



2=i.(i-.4-i-i-i-etc.)+,:^;i+^^ + ;-. + J,-fi. + ,-i;etc.) 



+7:it( ^ - 7^i.+h - .xp + etc.) + ,77.' ^ + TO + ia +ii^,:+>a+ etc.) 

 +i;T^.t ^ - 1^ + h - rr^r^+etc^j+^-^.r 1+-^, + -L 



10. Quodfi ivunc breuitatis gratia ponamus: 



H- b -+ ^ -f- ^ 4- etc. 



a TT 



» 



» 4- ir -^ 3^ -H ;-,-t- etc. =: S tt*,- 

 ^-^b-^b-^T^-^ etc. zn V 71* 



tbi quidem numeri a^ g» y^ 3" €tc. funt cogniti ; €t 

 quia 



/ )(X -*■ 1 4- I — I ctc. =: I erit 



2=^.-. +riT(a'^'+; + ^ + -r. + etc.) 



+ rii^^^*-K-H-ri^-^^^-)+;:^fY^*+i.+ i. + ^+etc.) 



+ .:?-.(^^*-IT-r*-77>-^tcO+,-:ir.C^7r-^+i, + i,--,L etc.) 



fbi iam totum negotium ad fummationem haruin 

 ferierum 



eH redu(5tum, quarum potellatum Krdfces 2,6", 1 2, 20 eCC 

 luat numeri pronici» 



IJC. 



