404 The Invetfe Methed 
a 1 cas Vv oe 
then v will become === e 
i a * so. n—1 
n—1 F . 
S°.N—1-2 
Hence the velocity in the curve : velocity at an 
Vv 
of so oinm—l 
C 2 2 
5". 4—1 —2 
infinite diftance ;: 0: - 
has :1. In the hyperbola, 
eo meee’ 
that is, when n= 2, the proportion will be 
fo ae Sarna 
ae “pain tk er eit VY 7 3 A being 
Ss —_— 
equal the tranfverfe axis. 
Let 1 == time of moving from / to 2, x= 
curve line Vn (Fig. 1,); then /y*—p*:y:3 
ouahan yy Wo oe 
yras - Buty sei: ritoy 
| Vy itis p 0] 
x : Py OBA 
= » becaufe J == —;3 therefore ¢ = 
. Pp . 
nt 2 in which expreflion, if  thic 
P y vy —p 
feveral values of p be fubftituted, we fhall 
have 
ee yo py + ia 
am being greater thea Ae. | 2. 
