916 PONTIFICIAE ACADEMIAE SCIENTIARVM SCRIPTA VARIA - 2 
which is effectively the function ¢ of the exponential model with 
315-7) 
®, 
LR 
r 
n 
Furthermore, from (510-6) we have 
6 
+ _ —K({n—1) 0. \n— CT 
15-8 B(0)=k(1-¢ F)[1+e 3 es = (7) 5 
(515-8) (=e) a 7 
Pb 
(515-0) 8(0)=klr-c) 
or finally, taking (515-4) into account 
(515-10) 
6 
B(o)=k © > 
a. 
which is effectively the function 8(8) of the exponential 
model (3). 
Naturally, these results will hold approximately if the A, _, 
of the equation (515-1), although not equal, are nevertheless 
of the same order of magnitude. 
(" 
(2) 
Relation (25: 
Since 
0 
1, 
4 
r 
(®) Relation (351-2) 
rv Allais - pag. 220