15 



§. 13. Ciim hic sit mz=:^^^^ et n — ^^^^p^, erit 

 primo m-^n — l^^lil^g^'-^ z= -1 k=.^^£=rio' Dèinde 

 vero habebitur m — n =r ?^^ := ^MilïÂ^IEirJD , unde 

 colli^ritur m — » + 2 zn 9 j^^'Jss-f^ _ (ggV//}(9gg-//) ^ 



^ ' 4/igg 4//gg 



y^ ^^ ,;, Qg-^— 8//gg — / -t fgg — //)C9ggH-/./) 



" 4//gg 4//gg 



Qiiare cum invenerimus p :=^ 4- (m -f- n) M , erit jam 



,, Cgg-//)C9gg — //)NÏ ^^ 



c, ^ ( (m - »)- - 4) M =: '''-':ijr::-''' m. . 



Ç. 14. d'io nunc rationeni litteraruni /> et 7 ad mi- 



nimos terminos revocemus, sumamiis ]M zm 1/., ^ — , sic- 



que prodibit p=— ï6ff^ et q~{gg-hff){9m~hff)' 

 Ex his jam, quia crat tz3:^(m — /i) p + 7, prodit nunc 



t = (êS -f-//) (9g§ +//) - 2 (3ê§ +//) (3§g -//). 

 Simili modo erit u zn î {m — n) p — q , unde colligitur 



u = — {gg ^ff) (ggg ~hff) — 2 (3gg -^ff) {3gg —ff) . 

 Atque ex his fiet c zn 2§t et zzzz^fu^ 



§. i5. Pro reliquis htteris erit primo a-f-b=2/(/9-f-f/) 

 et h — a :=: !2g(p — «7) ; deinde vero erit r-4- rziz 6g (p-+-q) 

 et X — y zzimf {p — . 7). Ilarum formularum ope quotquot ki- 

 buerit exempla satis expedite resolvi, idque adeo in in- 

 tegris, liccbit, quandoquidem omnia pendent a ratione in- 

 ter numéros / et g , . quos ergo semper integros assu- 

 mere licet . " 



