*:The variables have the interpretation of Y as output, L as labour, K as capital, and A is multifactor productivity. In general, empirical studies have shown that the [[United States]] economy has approximately <math>\alpha = 0.33</math>. | *:The variables have the interpretation of Y as output, L as labour, K as capital, and A is multifactor productivity. In general, empirical studies have shown that the [[United States]] economy has approximately <math>\alpha = 0.33</math>. |