SEMAINE D’ ETUDE SUR LE ROLE DE L ANALYSE ECONOMETRIQUE ETc. 1043 
[UNDERDEVELOPED AREAS 
The productive investment in the Underdeveloped Areas is 
being supported from two sources: The saved fraction, 1,, of 
their own Gross National Product, ¥,(¢), and the capital-im- 
ports, H(?): 
Investment Function: 
6) 
L({)=i,Y,({) + H()= 
CAN 
* A, 
La 
T 
1 [we a 
Acceleration Relationship: 
= 
Y, (HN 
b, is the capital coefficient describing the amc... «. capiia 
required per additional unit of annual GN. 
Growth rate equation derived from ‘) and (7): 
‘) 
‘a) 
Y.(5) 
"+ 
Growth Function, obtained 
tion (8): 
r 
Yh)=Y 
ye 
solving 
Ir 
‘he differential ecua 
To verify the last equation one can substitute it and its 
derivative in (0); the expression on the left hand side will 
identically equal zero 
- 
1.3] Leontief - pag. 
=