边际
(重定向自邊際)
边际(英語:Margin)在经济学中指的是每一单位新增商品带来的效用,这就是生产或消费的边际。这个增量实际上是原函数的一个导函数。[1]相关的一个概念是弹性,指的是某一应变量变化百分比与其影响因素变量变化百分比的比值。[註 1]
注释
参见
参考
- ^ Wicksteed, Philip Henry. The Common Sense of Political Economy, Including a Study of the Human Basis of Economic Law. Macmillan and Company. 1910: Bk I Ch 2 and elsewhere (page 4 at econlib.org transcription).
Only at the margin is there a coincidence between the thing gained and the price paid for it.