/*
** Lesson 3.4: Production Function
*/
use gpe2;
output file = gpe\output3.4 reset;
load data[40,6] = gpe\cjx.txt;

year = data[2:40,1];
X = ln(data[2:40,2]);
L = ln(data[2:40,3]);
K = ln(data[2:40,5]);

call reset;    
_names = {"X","L","K"};
call estimate(X,L~K);
_restr = {1 1 1};
call estimate(X,L~K);
end;