是序数效用论者用来分析消费者行为的理论工具之一。在消费者面临的商品价格既定的条件下,消费者的收入对效用最大化形成约束。既定的收入全部用于消费可以购买到的商品组合构成的曲线即为消费者的预算约束线。预算约束线方程为:P1Q1+P2Q2+……+PnQn=m。如图。预算约束线限定了消费者能够选择的商品的范围。
预算约束线的斜率会有所不同,人们对即时消费和延期消费的偏好,也会有所不同。
The budget constraint is going to have a different slope to it and preferences will be different over this horizon between consumption then and consumption now.
The budget constraint is going to have a different slope to it and preferences will be different over this horizon between consumption then and consumption now.
预算约束线的斜率会有所不同,人们对即时消费和延期消费的偏好,也会有所不同
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