t-Jl 0?USCULA. 
gg—^Q' i-^^Sy(^f''dcp.Ch.q(!^ 
T gg-^qq (i-gy(^fCh.^Cp 
gi-e^' (—gSyc^f-'dcp,Ch,^cp 
Q,E. Inv. 
Si coefficientes tcrminorum yC(:fSh,^cp,yC[fCh.^cp 
moltiplices per — p , habebis coefficientes fummatoriarum 
y 9^-* dcr , Sh , /^cp, y cp^'^ . C h . ^ , qux fummatoriae per 
eamdem methodum probabuntur dependere a fummaroriis 
y cp^-* //'p . S h . ^ (t» , y Q)^"* dcpCh, ^cpi atquc ita deinceps , do- 
nec devcnias ad forrnulas y dcp . S h, q cp , y cp . Ch , ^ cp , 
qux integratx func num. IV. 
XVIII. Quandoquidem pofito^^r:^^^, five^=itf, 
xquationes inventae evadunt inutiles , patet , hic quoque ex- 
cipi cafum, qui txceptus eft in hypothefi ^ = o . In hoc ca- 
fu valet theorema y.izizSh.^^cp-hCh.qcp — r: ergo mul- 
tiph'cando per ^ ^^^^ fiet Hi—i? . f -^z Sh, ^cp H-Ch.f^ 
^qcp^ dcp , DifFerentiando quantitatesj c^^Sh. q cp^y (^^ Ch,qcp 
oriuntur aequationes duse 
i2^^_^.(diSh.^^-hCh.f DyCp^Sh.q^ 
— ^^'^^ qiS h.q cp 
fJ^il .(Sh.^(p:l:Ch,qcp=Dy<^^Ch,^cp 
— ^9 S h . f (|> . ^quationi theoremati$ detraho 
primam , & addo fecundam , & invenio 
^Z^i^ ,:;;^2Sh. /fcp^— Dycpf Sh, q cp 
~\- py (^'~' d (p ,Sh .q(p ~>r q CpP d (p 
U^^,iCh.q(^--^Dy(p^Ch,q(p 
Zf: r/-' d^.Ch.q^p-h^^cp^dcpi hoc eft pcraflis op» 
portunis opexationibus 
(p^d Cp • 
