SEMAINE D'ÉTUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. 813 
The same is true for all the relations which can be derived 
therefrom (1). 
Estimation of ©, 
313. If the assumption is made that the function ¢(u) con- 
verges rapidly for small values of #, the relation 
313-1) 
which neglects first order terms which include 7-p can be 
used to derive an estimate of the order of magnitude of © . 
Estimation of 
314. It would be very useful to have an estimate of &, since, 
ander the hypothesis of an exponential decrease of the function 
3(0), we have &=o (*). 
However, even if rapid convergence of the function ¢(u) 
for small values of u is assumed, and admitting as a conse- 
quence that we can write (4) 
(314-1) ¢(i-p) oo 1-0, (ip) +(1+3) © (i-p) 
1y 
This is notably the case tor the interesting relation 
given above (125-2). 
™ Relation (226-3) and 
Relation (251-1). 
Relation (240-1). 
x | 
Allais - pag. 11°