299 



n zr. 2 

 : 3 



n 



Zk-ii-^ ctej^ — t^ .7] 



D 

 C 



E 



&c. 



[a . 9] 



3) Cum ($.3.) sit P.Q.Rrz-I ^i- . g.R s — 



.'. [Z.n-t-3] ^ 



'[Z.n-4-i] , [X2 . n ■+• 4 l 



- et (5. 5.) sit (2« -+- 7)- ■= S . ± L j : 



[Z.n-f-4] ;->,■:-"; EH . n -+ 3] 



,-. « n — [ Z . n] r _ ;[Z . hH-iH 4 



hincque P = — — - — ~ —} S 



et ( 2 n -+- 7 ]* = 



[Z.nH-3] . Q ■ R' 

 _ [Z.n-+i] 



[Z.n-t- 4 ].Q_. R 



[XI. n-4- 4]. 



; substitu- 



[Z.n + 4] .Q..R [Xl.n-+-3] 

 tis his valoribus tertia aequalitas abit in sequentem: 



[Z . n 



[Z . n -+- 4] 



[ y . sn -+• 3]— t- 



[Z . n] 



[Z.n-f.3] 



.[y.an+i] 



__ [Z . n -+- 1] : [XI . ji+ +] 



1 » — —■■•■■ s . • " — ■ ' ■ ' ~ . -* 



[Z. ,n-f- 4] [XI . n -+- 3] 



• IP. 2n-+3]. 



tinde, si 

 n = o 



?i = 1 



n = 2 



colligitur, esse 



J [Y .3]-l [y . ,1 = ^,3.3] 

 | [Y . 5 ]-^[y. 3 ]=|^[p. 5 ] 



B 



p[y-7] - ^ Ev;-rt 



E 



F . £ 



&c. 



Qq ^ 



4) Curn 



