24«$' Opuscula. 
Quum s poffit recipere quemcumque valorera pofitivum , & 
siegativum , perfpicuum eft , in his formulis ineffe aliquid in" 
determinati , quod pro libito auferri poteft . 
Formulx duse Sy d(p ,Sh , q <^ , ^jy ^<?> • C h . ^ ita con- 
fungi polTunt, ut dentur per folos fmus & cofinus , quum 
sciHcet terminus — es contrarietate fignorum eliditur; quod 
{a.Us eft paucis adnotafife. 
VI. Spedavi hadenus formulas , in quibus finus & co- 
finus linearem folum obcinent dimenfionem ; nunc fpedtans 
illas , in quibus dinienfio eft fecundi gradus , inquiro inte» 
grationem formularum y d c^,S c, ^ ,y dcp.Scqcp^CcqCp^ 
jf^?q).Cc.^:p. Ut eam obtineam inquiro differentiam trium 
quantitatum y,Sc.q<p,y,Sc,^Cp,Cc.t^(p,y,Cc.q(^ ^ ui 
tres fequentes xquaciones oriantur 
3.* -^y d <^,S C . q (p ^y //qj.Sc.^Cp.Cc.^q) 
— Dy ,S C . qCp 
2. -y-y d(p ,S c (p -\~—y dcp ,S € . ,C C . 
q ————.2 
^ j ^(p,C c . ^ cp ==:Dj.Sc.^cp.Cc.^(i? 
3. ^ — — jy ^ (p . S c . ^ ^ . C c . 5^ cp 
g 1-^ 
^ ~ y d , Oc, q<p — Dy , Cc .qc^ 
Secunds mukiplicatx per ^ addaturprima du^ia in de- 
matur tertia ducta pariter \n q , Si poil congruas operatio- 
nes prodibit 2 
3 r ( qDy. Sc. q (^ 
4. y J(p ,S C . q (D .Cc .q (b ( Dj .S c . q (p . C c.q (p 
V — q D j . C c . ^ 9 
2 q 
qux ed fecunda ex requifitis. Multiplicetur quarta per — , 
& dematur a prima 
\^ d(^Sc.q(d z=i-~ ( —2gq. D jS C. q (p .C C. q (p 
quac 
