Et vis *4 4- — ■ — ~ X cof. P S Q_, qua urgetur 
2 » k Z 
planeta P in Solem fecundum radium P S, fiet 
Q ’ T) ^ S 
— r in R 
t z 2 
, „ , k T r c f i 
J 7 T S X cof. — .? 
1 2 k 2 - n 
kS + fiV — 2T r 2 £T + tW — aV r 3 
cof. —s col. — s 
« 2 « 
cof. — j -[-, &c. E. I. 
iV +iX — 2 W 4 
PROPOSITIO VI. P R O B L E M A. 
Inaequalitates motus planetas exterioris ex viribus pr*e- 
didtis ortas inveftigare. 
Per analyfim in propofitione fecunda inftitutam vis 
ad radium P S perpendicularis generabit accelerati- 
onem, vel retardationem velocitatis, dum arcus qui- 
libet D P defcribitur a planeta P, sequalem —jr~ 
. , t z T r i S — V r 2 
mb — R — — x col. — s — col. — s 
k l 2 n 4 n 
— LziZ C 0 f. l s _ XjziE co f ± s &c. =u 
o n 8 n 
t 3 
exiftente h — R — — — 
H § — +> &c. 
T , S — V t T — W 
T "*■ 4 ' 6 
Deinde li fcribatur p pro vi ilia planetae Q_ qua 
urgetur planeta P in Solem, prout in propofitione 
praecedente definita eft, et v pro velocitate afcenfus 
vel defcenfus planetae P fecundum radium PS, et jam 
5 • fupponatur 
