170 



£. 2 $. Loco % igitur introducatur y, fcribendo /( 1 -yy) 

 loco z, eritque Y{z%— 1)=// — 1 ct z~Y~-i*y (yy — i) t 

 unde ex J. 7. fit 



2 s 



(V-zJ 



(Quoniam enim in priore- feri-e n tantum par effe potevt , 

 perinde eft, iive fcribatur [y~Y(yy~ »)]", five [/(//-1 )-""/]"■)• 

 Tum vero , quia haec expreffio ab ea quam §. 7. pro 2 .? 

 invenimus, tantnm in eo diifert^ ut hic fit y quod ibi erat 

 %, etiam per feries erit: 



CA f I — V Z -+- ""fc"-^ ^- rtTMnn— 4 (n n— 16) ~6 _j_ e ^ c> "j 



2 o ) 2 •' 2. 3. 4 "^ 2. .6 "^ * 



(7^77 ~ fil y [ 1 - [^y -4- iJ^J^j^ _ etc. ] 

 Xam fumto y infinite parvo duplici modo habebimus :. 

 . -- z= 2(Y — 1)% 



(Y-if KV } 



- — A.-f-$H/,. 



hinc ftatim fequitur A~ s(/ — i )* et $1= :o, confequenter 



s ~ coLn (p ~ 1 — ^yf-+- »»<"*—» j^» — ^'^-4'mn-i6y _^ ctc 



J, 26. Eodem modo pofito /(1 — y y) loco 2; ex 

 j. 7. habebimus: 



7 - 7 -^^T=^+> / (//-or+t/-> / (7/-i)r. 



( Ob n enim impar fcripfimus [y — Y(yy — *]Y l° c o 

 — lY(yy — — yY* Erit igitur per feries: 



s.vy 



