成本和效益英文

图解：

边际成本（Marginal cost），是指在任何产量水平上，增加一个单位产量所需要增加的工人工资、原材料和燃料等变动成本。

例：生产某种产品 100个单位时，总成本为10000元，单位产品成本为 100元。若生产 101个时，其总成本10090元。

即：边际成本=（10090-10000）/（101-100）=90元。

拓展资料：

边际成本(Marginal cost):增加一单位的产量(Output)随即而产生的成本增加量即称为边际成本。由定义得知边际成本等于总成本（TC）的变化量(△TC)除以对应的产量上的变化量(△Q)：总成本的变化量( Changes in Total Cost)/ 产量变化量( Changes in Output) 即：MC(Q)=△TC(Q)/△Q或MC(Q)=lim=△TC(Q)/△Q=dTC/dQ(其中△Q→0)。

参考资料：百度百科 边际成本

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