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传统经济学的消费理论认为,消费者总是依据自身的需求和偏好,在一定的收入限制条件下,从市场获得一定数量和结构的商品或劳务(为简便起见,以下统称为商品),进行消费并获得效用,其个人效用最大化函数为:U=U(X_1,X_2,…,X_?) (1)在总收入(货币收入)I=∑p_ix_i的约束条件下,这里x_i表示第i种商品数量,p_i表示该商品价格,消费者达到最大效用的均衡条件为:
According to the consumption theory of traditional economics, consumers always get goods and services of a certain quantity and structure (for the sake of simplicity, they are collectively referred to as commodities hereinafter) according to their needs and preferences and under certain income restrictions, and carry out Consumption and utility, the personal utility maximization function is: U = U (X_1, X_2, ..., X_?) (1) Under the constraint of total income (money income) I = Σp_ix_i, The number of kinds of commodities, p_i said the price of the goods, the consumer to achieve the maximum utility of the equilibrium conditions: