various translog preferences. Key Words Exact index numbers, superlative index numbers, flexible functional forms, Fisher … to flexible functional forms for functions that represent preferences. In section 8, we consider price indexes or cost …

Classification: D110 Key words: Normalized Quadratic, expenditure function, flexible functional forms, elasticities … demand, since these flexible functional forms can approximate arbitrary differentiable demand functions to the first order … functional form for a production or utility function and a cost or expenditure function. Basically, flexible functional forms …

, flexible functional forms, indicator functions, cost functions, money metric utility functions, duality theory … flexible functional forms, for either the linearly homogeneous utility function or for the dual unit cost function and he … called such indexes that were exact for flexible functional forms superlative. However, empirically, it has been shown …

. JEL classi�cation: D12, E21 Keywords: Representative consumer, Engel curves, Rank, Flexible functional forms, Parametric … version is its easy ability to test for blockwise strong separability. 7 4.1 Locally Flexible Functional Forms A locally … by Barnett and Seck (2008). 4.2 E�ectively Globally Regular Flexible Functional Forms Locally �exible demand models …