fp6 DE AEQrATrONlBVS 



integrale erit 



p 



Soiutio lir. 



Surtito' multiplicatore ^ dx'-+- '2.Qjixdy-{-5Kdf^- 

 prima integraUs pars exiait ? dx^dj-^-Qdxdy^-^Kdj^, 

 et refiqua expreffio ihtegratida 



fPiUx^-i^zj^^Q^^dx^dy-^^^^fRXdx^djr 



-drdr(,'^)~-dxdr\'^) 



'^^xdf(il^--dr0 



tndc ftatimr, vt ante concludimus, Rri^Kfundioni ipfius^ 

 :»:, tum vero (i=L-r(^4), ^^ ('^^(U^-y^^d^)^ 

 Deinde deftrudio temiinorum fer dy^ aflfedorun^^ 

 praebet : 



SyKX— (3|)-(^)-f-j/(^r) — o, ex quo fit^ 



P = M-j'(j-i)4-|-J'^(^)-+-,;i4i-/-^'KX. 

 Cum ergo fit 



(d«) — (jic)-jK(diE?')-+-iJirW)-+-s::ir7J>'^ ("dir/^ 

 ob 2 /Q^Xvf^^^y = » X d-x^y L rfj^ -^'"■^- Vj/ (j^)) 

 termini per dj aflfe^ai praebent alteram integralis par- 

 tenii 



Imb 



