»vi ^wi -►, .vi j^..i * V c.ucLii , ungulos feorfim exprima- 

 mns et per fin. (^ multipiicemus , ficque prodibit haec 

 aequatio : 



— 2 flf fl cof. Cf) fin. 4>'- 4- « ^ (2 fin. (p cof. (p fin. w - fin. (3 fin. (p) 

 -i-r<r(2fin.|3fin w — 2 cof.Cpfin. w') — o. 

 Cum igitur fit co — 180 — j3 — Cj), erit "''■ 



fin. 00 ::r fin. i(i-+-(P] — fin. |3 cof.$) ^- cof p fin. (|), 

 vnde habebitur pro membro ac coefficiens 



2 fin. (3 fin. (1) cof. (p* 4- 2 cof. (3 fin. Cp' cof. (p-fin.^ fin Cj), 



at membrum f f, quia fadorem habet 2 fiu. u, ita reprae- 

 fentetur: 



2. c c fin. 03 (fin (3 — cof (]) fin. u), 

 cuius faftor pofterior, loco fin. w fub(tituto valore, euadit 



fin.p-fin. (3cof Cp' -coi; (3 cof. Cpfin. (J) — fin. (3 fin. Cp* 

 -cof.f3fin,Cl)cof.Cp=fin.Cl)(fin.pfin.<^-col.[3cof.Cj)) 

 ^-fin.Cpcof. ((3-hCi)). 

 Cum igitur fit wc: 180'— (3 — Cp, erit cof. w :z — cof. (j3 + (|)), 

 ideoque poftremum membrum erit 



z e c fin. u fin.Cpcof. u) — ^ ^ fin. Cp fin. 2 w, 

 quod ob 2 w — 360° — 2 p — 2 c{) dat 



fin. 2uz: — fin.(2(34-2Cp))r — fin. z^coC 2(J) — cof. 2(3fin. 2Cp, 

 ficque Yltimnm merabrum eft 



- c c fin, (p (fin. 2 (3 cof. z (p -\- cof. 2 j3 fin. 2 (p); ,, 

 membrum vero medium eH; 



tf iT fin. Cj) (2 cof. Cp fin. w — fin. (3), 

 cuius fadlor poQerior, loco fin. w fcripto valore , fit 



Jiia Acad. Imp. Sc. Tom. 111. P. //. V 2 fin. ' 



