270 
) o ( 
ma vice inventus , fubdituatur pro ipfo in scquatio* 
ne generali differentio differentiali ad orbitam , hoc 
eft in æquatione ilia aequatio, dum valor per inte- 
grationem æquationis C erutus prof fubftituitur, dabit 
aequationem formæ ddt-i-N^täz^-^Rdz- ) + Fdz^. 
Cof. mz + . (51+ P' Cof. Nz + D' CoLfz 
•q- Af Cof. qz -f* 0' Cof. hzy -h Sdz^ Cof nz . 
À- + 5' + >' Cof. Nz + D' Cof./ 2 + &c. r ’ + Ldz^ 
■ ■ —A. dZ^ 
Cof pz ( Qj-y f Cof Nz -H &c. I ff- — ( 
Ttdz 
ff- ff Cof Nz -i- D' CoC. fz)~^ f (/Î + 2' + ff 
Cof Nz 4- D' Cof + 
9:g 
TT dvdz 
aequatio, poftquam etiam ultimus terminus 
0 = quæ 
t: dvdz 
ex invento valöre proximo ipfius t fimiliter re- 
duftus eft ad fun^ffionem ipfius z^ cum aequa- 
tione ddt “h N' tdz'^ + Mdz^ — o eft compara'- 
bilis. Similiter ft in aequatione B ponatur jam 
valor magis correÊlus ipfius t ex aequatione E eru- 
tus proveniet ddt -f- N* tdz^ -f- Rdz -j- Rdz"" Cof 
60dz^- 
tnz 4- — — ( 2^-}- P Cof Nz-j- D Cof fz 4- Szc. 
k 
4- 4^2 Y 4- ^dz^ Cof p7iz . ( A'4-21 4- f Cof Nz 4- 
2 C) dz~ 
&c. + 4'z)-«+ . ( £' + P' Cof. Nz + &c. 
gg 
(å + 5: + P Cof Nz + &c. + 
i^/z) 
+ i^z)-V- 
Trdz 
/y (T 
