C 3 2 3 ] 
fupponatur S P = x = i — QJ- K cof. ~s -]- L 
cof ~ s -f- M cof. -~s -f- N cof. ~s +, &c. exi- 
ftente K -|- L M + N &c. erit ^ -\-p 
vis centripeta planetse P, et 
- X * 
- + ul’ 
ejufdem vis centrifuga, atque inde habebitur v z=z 
— -X- — U 1 x 
x s 
+ u 
Turn reftitutis Valoribus quantitatum U, p , x , et 
profequendo caiculum prout in Prop. II. pofitis 
A_ ir d t 3 T <pn t 3 iT 
A = K« + — x R_-_-__x^R- f -S+— 
tpkr? - — — <pn 
B = Lx^ + ^xS~V-^y i kS + kV-2T 
4 * 
C = Mxy+~xT-W-f£x/*T+*W- 2 V 
D = N x i+i^xV-OC— ££. x W+kXZ 2 W 
&C. 
I*. . <p *pk iS 2 <p k h n „ 
prodibit 'u — — X R p Q_X * 
+ A x fin. -s 4 - B x fin. -s 4- C x fin. -s 4- D 
X fin. ^ j- &c. -]- Z , et fafta hypothefi quod fit 
'U = o ubi angulus PSQ^= o, vel rx iBo°, expri- 
mente r unum ex numeris naturalibus i, 2, 3, 4, 
&c, erit Z — ■ 
<P r, 
7 XR- T 
2(pkhn 
Tt 2 
— Qj< r, 
ac 
