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) converges
 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 consequence
 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).

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Allais - pag. 11°