SEMAINE D'ÉTUDE SUR LE ROLE DE L ANALYSE ECONOMETRIQUE ETC. 
77 
for any system of values of the 9 on the condition of restraint 
(222-2) 
Re _/"p(e) 2¥(t-08) d8=c 
R. c{t-8,0) 
where the &¢ represent virtual variations of ¢ 
This implies that 
(222-3) 
K( 
8(0) 
ry 
from which 
(222-4 
p.t-6,0)=K(¢)B(0)e 
The Condition ls +- 
225. 
(275 … 
From 
ed 
we have 
ct 
9d 
{ Allais - pag. &