== 43 === 

 Eodem modo habebimus : 



I 3 _f 3 I 2 



3 4 ~^5 6 ^Ts.S 



,i 4 _i 6 4 _, I 2 



3 4 "^5 6 ""'■^7 y 6T 



,1 5 _, 10 10 _i 5 1 " 2 



3 4 ~^ f (> ~f^ 1 8 6 7^8. 



§.25. Superfluum foret haec ulterius proseqm. Hinc 

 enim satis patet, si fuerit c = — 4, posteriorem progressionem, 

 atque adeo summam prioris, futuram esse : 



— I _i- 3 3.1 — — t. 2. 3. 



TiH-i n-H2 n-H3 'n-f-4 (f^t -HI) (n ^- 2) (n -t- 3) (n -H ♦) 



Prior vero series, omissis terminis nihilo aequalibus, erit: 



~ I © -i-IG) -i® - KP - 1 (P- -+- ^"=- 



F a AC- 



