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Weber-Fechner's Law and Demand Function


  • Kazuyasu Shigemoto

    (Tezukayama University)


We apply the Weber-Fechner's law, which represents the relation between the magnitude of physical stimulus and the magnitude of psychological sense in human being, to the utility function. We conclude that the utility function of n-types of goods is of separable type u(x_1,x_2,...,x_n)=u_1(x_1)+u_2(x_2)+...+u_n(x_n), which gives the relation of the demand function in the form p_i=d u_i/d x_i. The explicit quantitative form of each utility function, which is suggested by the Weber-Fechner's law, becomes u_i(x_i)=A_i log (x_i/x(0)_i). Then we obtain each demand function in the familiar form p_i=A_i/x_i.

Suggested Citation

  • Kazuyasu Shigemoto, 2004. "Weber-Fechner's Law and Demand Function," Microeconomics 0412001, University Library of Munich, Germany.
  • Handle: RePEc:wpa:wuwpmi:0412001
    Note: Type of Document - tex; pages: 7

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    Cited by:

    1. Kazuyasu Shigemoto, 2005. "Weber-Fechner's Law, Demand Function and Related Topics," Microeconomics 0503004, University Library of Munich, Germany.

    More about this item


    Weber-Fechner's law; utility function; demand function;

    JEL classification:

    • D1 - Microeconomics - - Household Behavior
    • D2 - Microeconomics - - Production and Organizations
    • D3 - Microeconomics - - Distribution
    • D4 - Microeconomics - - Market Structure, Pricing, and Design

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