SVMMANDl PROGRESSIONES. 79 



rro, fi fcilicet fit x~i. Qiiocirca erit .f — ^ 



ao- 



§. II. Simili modo intclligitur fi n in denomi- 



niitore 3 pluresue dimenfiones habeat, quomodo fam- 



mam inueniri oporteat, ita vt opus non fit .pluribus 



exemplis operationem illuftrare, Sit progrefiio propo- 



v" 

 jGta haec cuius terminus generahs eft — '■ — 



(an-{-lj]{c-n-\-eyfn+-g) 



fumma huiiis fit ,f. Haec progrelTio eodem , quo praec. 

 cedente §. modo tradata dabit poft duas ditferentiones 



acd{x '^-^'^ d{x": s)) x^ " __ _^.r-4-«— « 



:rr ( p. §. 9 . ) j^ .v^ — / — ' fx s dx ( ~=^ ) liimantur intc- 



I — n e_ b^ 



.. .^ acfx b^o d{x^ s) c '-l- , , ^ , 

 graha erit —^ -— -—jx" i—^dxfxf dx 



(1=^), et denuo acfx'^ s—fx°^~^~^ dxfx'''^-^ dx 



^ ■ >i b e <■ g 



fx / dx ( -^-^ ) , adeoque s — — l— ^ fx ^~ ^— ' dxfx^-J' *' 



acfx- 



dxfx / ^A- ( Y~). Ne phira figna integraha poft fe 

 inuicem fint pofita, haec forma in fequentem transmu- 



-£_ g_ n — e_ e n 



/x A' ffxfdx{l^=^) cx ^ fx'' dx '-^ 



(^/- ag) {ef-cg) {bc~ a e) {c^-efy 



y 



