"^P.i ) 75 ( |fI«- 



his aequationibus fatisfaciefttcs , adhibeantur. Primum ve- 

 ro, ob confimilem rationem ipfarum Cj) et vj^, ftatuamus 

 v|/ — m Cj), ex quo obtinebimus : 



x^ddi^-i-i^. — a.— }na^)xd(p 



H~ ( 2 — a -f- y -f- ;« ( y'' — a' ) (p = O ; 



m X' d d (p -\- (m { ^ - ^^ ) - (i) X d (p 



4- ( ??K 2 ~ p' + 50 -f- 5 - P ) 4^ ~ o. 

 Leui autem adhibita attentione patet, valorem particula- 

 rem pro ($5 in vfum vocandum huius fore formae (f) — .v^; 

 inde enim fiet 



d(p — -Kx'^-'dx et ^/^/Cp z= ^ (X - i ) a;'^"% 

 quare fubftitutis his valoribus prodibunt binae iftae ae- 

 quationes : 



X(X— i)-{-X(4 — a — ?«a^)-f-2 — a + y 

 H- ;;/ ( y' — a' ) =: o ; 



4- ;;; ( 2 - (3M- <J' ) -+- <^ - (3 =: o, 

 cx quibus X et m determinari oportet. 



§. 14, Hinc igitur confequimur per priorem ae- 

 quationem 



X(X— i)-hX (4- — ii t)-t-i — » -i- y 



— A a' -+- a' — 7' 



et per pofteriorcm 



m — X p-f-p — y 



X(X— ■)-t-X(+ — P'J-i-»— (3'-h5'* 



His igitur valoribus inuicera aequatis orietur: 



K a 



