276 Francisci Bertelli 



ac si factorem quatliati c' in pristinaiii formam N^'^', quae for- 

 niae coefficientis N(^^ simllis est^ tibi reverti libeat, (26), (27), 

 (num. 18), habebis 



Praelerea in eadem hypothesi, quoniam est (2), (num. 5)^ 



AH)=A('i), 

 summa aequalionum (1 7) j, (1 8) numeri 1 7 abibit in 



/(/A(i)\ /dAW\ A/'A(1)\ 



\ da / \da' / \dada J 



el formulae (32) numeri 19, et (50) numeri 26 evadent 



nine 



'«' ., s '»' { /dkio)\ , /fi?2A(<')\ ) , 

 _.AWh — al —- l-i-i-a^ /-—--) e^ 



2 4( V ^« / W«Wi 



H \a'[ ]-Hia'2(- ) e'2 



F=( 



m'( _ /fl?A(i)\ ,/rfA(i)\ /J2A0)\) 



t 



-*-—.aa'B(^Xpp'^qq'). 



la ceteris seriei (E) terminis sinus, et cosinus arcuum una 



