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In microeconomics, the expenditure minimization problem is another perspective on the utility maximization problem: "how much money do I need to reach a certain level of happiness?". This question comes in two parts. Given a consumer's utility function, prices, and a utility target, * how much money would the consumer need? This is answered by the expenditure function. * what could the consumer buy to meet this utility target while minimizing expenditure? This is answered by the Hicksian demand function. ==Expenditure function== Formally, the expenditure function is defined as follows. Suppose the consumer has a utility function defined on commodities. Then the consumer's expenditure function gives the amount of money required to buy a package of commodities at given prices that give utility of at least , : is the set of all packages that give utility at least as good as . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「expenditure minimization problem」の詳細全文を読む スポンサード リンク
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