%zl*£- '- - -t-2.3 25z 3 -+-4.5£z ? n-6.7£)z' ? -+-etc.' 

 — ^r— 2.3®%--4-5<£tf— 6.7&Z*— 3.9<£s 7 — etc. 

 -+- 32^=-f-3 2lz-r-3.3~5z 3 -t-3.5 ( 2V-+-3.7®2; 7 -^etc. 



— (wi-i ) 2;=— (rctt-i)~iz— (ftrc~i)~3z 3 — (rcrc-z)£z 5 — (ftra-i)£>z 7 -etc. 



his colle&is nanciscimur 



. (?i n. — 4) 



2. 3 

 ( n n — 16 ) 



fQ = — *!L=±>w 9 



cr — c n ~ I6 -» 9^ 



\ 4— ^ * 



© = — <:l1"__l' <£ , 

 etc. 



unde ipfa altera feries erit 



v~%z\i — ( ~ T "~ 4 : £ 2 -f- '~ n " 41 nn " 16) g 4 - ( '" t - 4 . 1 ""'" IiV '" t '" 36)< t 6 -t- ^ ] ■ 



J. 1 9. Quod n nunc ambae feries in unam fummam 

 colligantur, habebitur: 



( A f t ( nn— I) „2 _j_ ( nn — i'(an-- 9) «4 (nn— ii(nw—9 "'n— 25' 06 -4. etC.l 



, _ ) L ~ 2 2. 3- 4 2. ..6 



/4-912^1 — fnn ~ 4) g~-f- t nn — 4'inn — 1 6) „4 _ ( nn— 4)i nn— 16> ^n— 36j g -6_ 4 _ ^f. 1 

 ( L 23 2.3.4-5 2 ... 7 ' J 



Iam igitur id tantum adhuc nobis efficiendum reftat , ut 

 conftantes A et % ita determinentur, ut hic valor pro 2 V 

 inventus conveniat cum expreflione fupra J, 7. allata: 



[z4-i/(zz—i)]~ — [2 — 1/(552 — i)] n 



2l> = 



v 



y(zz— 1) 



J. 2c, Hoc facillime praeftabitur, n valores, qui po- 

 fito z infinite parvo emergunt ex utraque expreffione, inter 

 fe comparentur. Eft vero, uti iam fupra vidimus: 



Y 



