TRIANGVLORVM. 8r 



erit primo quidem 'Rrizbb — aa-ac^ tum vero fe- 



cundum legem fcriei recurrentis : 



'Dzz{bb~aa-\-cc)^ —bbcc.i pro « — 4 

 Y "^-ibb — aa-^cc^D — bbccl^ pro n:=^6 

 Hzz. [bb — aa-i-ccjF — bbccT) pro nzzS 

 Y.~{bb — aa-\-cc)Y{'-bbccY pro «rrio 

 M:=:(^/; — fla-t-i-f)K — ^^i-fH pro «ma 

 ctc. 



m 



rnde has formulas , quousque lubuerit , continuare 

 licet. 



Coroll. I. 



19. Si crgo haec feries fbrmetur: i-4-F5r 

 -f-D5;'-+-Fs'-4-etc. ea ex euolutione huiusmodi 

 fradionis : 



TH- A g 



I — (6i)-f-aa-(-ci)z-+-66cczz 



nafcitur , \bi quidem eft A~ — ac—cc, haecque 

 fradio adeo illius feriei in infinitum proktae fum- 

 mam cxhibet. 



C o r o 1 1. 2. 



20. Hinc porro in genere formulam indefinite 

 numero i conuenientem exhibere licet , quippe quae 

 ita exprimetur : 



i 



i 



Cn ibb—aa-^cc — V(a*-|-J* -f- c* — iaobl — 2 aacc — ibbccs 



2d( r )) 



Tom.XI.Nou.Comm. L vbi 



