SEMAINE D'ÉTUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. 929

1

PARTICULAR CASES

4. THE DEVELOPMENT OF {3(6)e*’ REDUCES TO THE n'® TERM
(n'>2) (PARA-EXPONENTIAL MODEL)

Hypotheses

520. With the exception of the exponential model (n=1,
the simplest variant of the general case which has just been
studied corresponds to the equalities

(520-1)

Rd
;

520-2)

For want of a better term, this will be denoted as the para
exponential model (1).

Expressions for the main quantities

521. We have

(521-1

)

u”

(') For n=1 these formulae correspond, of course, to the exponenttal
model ($ 250).

(11] Allais - pag. 233