CIRCA SERIES INFIMTJS. 1*7$ 



1 1 1 1 1 1 



mV f &* w&r «£l«& fimme huius feriei 

 iii 



Demonftratio. 



Sit 



1 1 r r r 

 x^ 1 -r- ji -t-£» H-7» +j^ -h^r ■+■ etcv 



erit 



1 1 1 1 1 1 , 



tnde oritur 



(2 n -l) x r x x" 1 



Porro eff 



(2 n -i) 1 1 r • r 



vnde fiet 



(2 w -i)(3 n — 1> r 1 



Similibus ergo operationibus pro fingulis numeris primis 

 kftitutis omnes feriei termini praeter primum tollentur> 

 seperieturque 



_ (^-i)( 3 n -i)(5 n -i)(7 n -i)(ii n -i) etc. v 



*— a a 3 n s % ^n 



ct toca r ferie reftituta fit 



z n 3 n 5* 7 * 



C^-i)(3 n -i-;(5 n -i;(7 n -i)(ii n -i) etc = c 



