2p8 



unde, si I 





n = o 



A 



n = i 



B 

 C 



n — z 



C 



D 



n = 3 



D 





E 



[<* . 3] 

 [« 



colligitnr, esse 



i 



~~ A 



A . Q 

 [a . 1] = — ■ 



5l ~B 

 B 



[a . 3] ■ = 



B . 



a 



y 



^ * [« • 7] - ^ • [* , 5] = 



[<* • 9] — 



c 

 c 



D 



L« •■ 7] = 



C . (3 

 C . 5 



D . y 

 D . g 



ET~5- 



&c. 



[Z./2H-2] 



i) Cum (5.3.) sit P . Q r j^L ; QR - [ ?: n _^jJ et 



[Z.zi-4- 3], 



^ a\ -^ ,V--r tn.tt-H_3] [Z'.n] 



( §. 5.) sit ( 2 n ■ -h 5 ) = R • r ^ ; hincqne P - 



[X1.M-H2] 



[Z'.n-+a].Q j 



[Z.n-F3].-Q. [2'.n.'-Hi].".<£ [ir.wi-i]* 



substitutis hisvaloribus secunda aequalitas abit in sequentem : 



[Z . n -f- 1 ] 

 [Z . rc^Psj 



... [(3 .- 2ft 4- 3] 



[Z .w] 



[Z . rc -+- 2] 



— [£' •• 2 h _h jj 



[Z . n -h 1] [XI „. n 4-3] 



[a . a n -f- 3] 



[Z . n -H 3I [XI . n + 2]; 



colligitur 5 esse- 



unde , si? 



H = O 

 ?1 = I 



n- 2 



