i -f- % 



p =z et 



/(i-f-i5z&*f-i5 z 4 -f- z 6 ) 



i — % 

 q=z- 



/(1-4-15 zz + 15 z 4 -f-z 6 ) 

 15. Sit n =z 6 et m zz 5» ideoque n — mhzz 1. 



6 



$. 60. Hic erit v~Y( i-f-15 zz-f- i5Z 4 -f-z 6 ); Trz 

 6z-f-20% 3 -f-6z^ F:=zi et G^z; hincque formula fpecialis 



^ -_ /* dz (i-zzY(f-+ -gz) ^ 



(5z+2oz 3 + 6g ? )]/{ 1 -f- 15ZZ-+- ^5 %*-h% 6 y 

 cuius valor eft 



> =— I <J+ &)/£% - 1 (/- «JA^. 



exiftente 



1 -f-z 



i> = 7-^ e£ 



/(1 + 1522+ isz 4 + z 6 ) 



1 — z 

 qr = : 



y ( 1 -+ 1 5 ■% % -+- 1 5 z 4 -+- z 6 ) 



Obfervatio in has formulas. 



§. tfr. Hic igitur etiarn cafus notatu dignus occur- 

 rit, fi n — 2 m; quo fit 



2771 



2; = \/ \\ ( 1 -f- %f m -+ I ( 1 ~ %? m ] , ideoque 

 v^-y [|(H-z) 2m -i-i(i — z) 2 ™]. 



At 



