) 318 ( %n<- 



§, $$. His igitur obferuatis pro literis A, B, C 

 hos habebimus valores : 

 A— p. cof./> + V cof. {s.r—p)y BrrfJifin.p-l-vfin. (ar— p); 



C ~ fin. i fin. [ f —p) 

 tum vero pro formnlis F & G « his vtemnr valoribus: 



F — XX — 3XXA-+I et Gwma A4-3Ajf-3Bj'-3Cs 

 fiue ' 



Gu=:3it.{i ■\-x)co{'.p-h3v(i-\-x)coC{itr-p)-3\f-J'firi.p 



— 3 yj fin. ( 2 r —p ) — 3 z fin. i fin. ( r — p ). 



§. 5 5. Pro prima igitnr noftra aequatione mem- 

 brum ad dextram pofitum euoUiatur, omiflis terminis, vbi 

 X ad duas dimenfiones adurgeret, ac rcperietur 

 F ( I H- A- ) =: I -i- X X 4- ^ — 2 X X ;if :Ct 

 AG«z=3AA-4-3AAjr-3ABj/ -.3 ACz 

 -vbi producfla A A, A B, AC ad fimplices cofinus redu- 

 cantur. Reperietur igitur 



AArr^ji. ^ coCp'-\- i [^ v coC p coC. {2 r - p) ■\-vvcoC {2 r~p)*r: 

 i(fjLjJi.4-vv) + JfjL|jL cof. 2 p H- jjL vcof. 2r-f jixvcof (2 r— ip) 

 -f ,>vcof (4r— 2/)) 



A B - fJi. [JL fm.p co{.p + fjL V fin. p cof {^r — p) -f-fjLVCof.;)fin.(2r-/)) 



•;}-vvfin. (2r— p)cof ( ir — p) — 

 5 |jL fx fin. 2 p -I- fjL K fin. 2 r -h ^ y V fin. ( 4 r — 2 /) ) 

 A C zr fjL fin.i cofp fin. (r — p) -f- v fin. ifin. (r - p) cof. {c>.r — p)-=. 



i fji. fin. i fin. r — 5 V fin. i fin.r-f-ifjLfin.iCn.^r— 2^) 



-l-iy fin. ifin. ( 3 »"— 2p )• 

 Hinc igitur pro prima nortra aeqnatione colligitur. 



Pars dextra. 



— i-XX-hUM-M--^" vv) -^ ' fjL fjL cof. 2 /) -f- 3 fJ^ vcoC. 2 r 

 3 fjL K cof. {s.r—ip^^lyy col. {^r — ip) 



— X 



