FORMVLARVM. 9 



Verum ex valore ipfius a l eft : 



2mnbzz a l — (nn-{~amm)a-fimm 

 quo valore ipfius 2 mnb ibi fublV.tuto prodibit: 

 a ll zz (n n-\-amm) a 1 -}-^ a m m n n a 

 -\-(nn~\-amm)a l — (» n-\-am m) z a—$mm'.n n-\- a mm) 



H-2 fimmnn 

 -\-$mm. 

 At ob nnzzamm-\-i , eft ^.ammnn — {nn-\- amrnf 

 zz--(nn-ammy—-i, et 2$mmnn-§mm[nn+amm) 

 zz^mm(nn — amm)zz^mm^ vnde fit : 

 a ll zz2(nn-\-amm)a l — a-\- nfimm. 



Coroll. 6. 



9. Cum igitur fimili modo fit : 

 a m zz 2 (n n •+ a m m )a JI - a l -\-2 (3 m m etc. 



Statim atque in ferie a, a\ a n , a m etc. duo primi ter* 

 mini habentur , primus (cilicet a vndecunque , et fe- 

 cundus ex fbrmula a l zz[nn-\-amm)a -\-2 mnb-\-$mm y 

 ex his fequentes omnes per has formulas definientur : 

 a 11 zz 2 (nn-\-amm)a l ~a \-2$mm 

 a lll zz2(nn-\-amm)a ll — a l -\- 2$mm 

 /-2(«« + a/^«)tf ni -«M- 2$mm. 



Coroll. 7. 



10. Pari autem modo progreflio numerorum 

 b, V-y Z>", b m etc. eft comparata. Primo enim eius ter- 

 mino aliunde cognito , et (ecundo per formulam 



Tom.IX.Nou.Comm. B b l 



