SEMAINE D'ETUDE SUR LE ROLE DE L ANALYSE ECONOMETRIQUE ETC 
961 
Furthermore, we find that T(: - ¢) remains effectively in- 
ferior to unity, a necessary condition for the validity of the 
expansion as a Taylor series of d(i-p) ("). 
Once the values of w and # become fairly large, T(i - p) is 
relatively small and the expanded series converge rapidly. 
Values of © 
536. From (526-9) and 
(536-1) 
4 
+ 
‘ 
y 
- 
& 5 
4’ 
or, again 
536-2)  @®= 
w 
Whence the following table for ® can be constructed ( 
(') § 512, we have pu =1/T [relation (510-8)]. 
() The values of T are derived from (534-1) and (534-2). 
{?) When = increases indefinitely, three cases are possible in line with 
the preceding notes 
a) o < w < Ycli—p). 
In this case T tends to a limit define” 
~£ 
‘ation 
+; 
and from this ana 
1 
de 
. Allais - pag. 265