ExempluiTi ;^. 



§. 14. Siimamiis A — srt- ef V> — h ^ fitqne porro 

 a nz I ct [3 ~ ::, vt noftra aequauo iiat ir~^"-}--^, riuc 

 jfjt"~ 2i3:.vH-Z', vnde fit .v 1= tf -f- Y (a a -\- b)^ quo valore 

 fubflituto fcries ante inuenta praebebit 



Tt (n — 5)(n— 4) „71 — 6 ^u — 6 ^,3 _^ n(n>^-)(n — 61 'n— O ^n — 8 ^1—8 ^4 



I. 0. 3. " I. 2. 3. 4- 



-H CtC. 



cuius veritas pro cafu, quo «=i, ex euolutione vulg.ari con- 

 firmari potefl:. Sumto enim n — i erit 



a ■+ Vaa-^b = 2 « -^- A _ ^JA, -^ .3^^ _ J„l; - l^ - etc. 

 nouimus autem ex refolutione vulgari cfib 



K V" " y d a i. _f. qJ 2.4.6. os -.4.6.» 0' 



cui fi addatur «, iplli illa ferics prodit. 



Exeinplum 4. 



§. 15. Sumamus a — 2 ct (3=ii, vtfit i = -^ -1- ^ , 

 fuie xxz=zA-hBx, ideoque .v rr «-:ii^«/-±-*^', Joco A au- 

 tem fcribiimus aa ct ^b loco B, vt fit x - b -i- }/(b b -+- a a), 

 quocirca ("cries inucnta nobis dabit 



(^ _^ Ybb-^aay =: fl" -H ". a""-" . ib-^l.^l «""' • 4-^ ^ 



_^ n(n^i) (rt 4-0 ^71 .-3^ 3/,3_^n(ji_~^>^n4^^n~4.i<S/;^-^CtC. 



2. 4. «. 4 K 



quae reducitur ad hanc formam: 



(b -+- yob-^aa/ = f/" H- "i «"-' /i -^ ? . " fl"-' ^ ^ 



-+- '^ . '"-'""+'' fl^i-J ^3 _^ n (n_^) n ^ ( n4-"-) ^n-4 /,4 ctC. 



hacc autem forma \lterius rcducctur ad hanc: 



(b^ 



