We prove that the long run cost function is a power function of output, and point out the special relationship between long run marginal cost function and long run average cost function.
文章研究一般性齐次生产函数条件下长期成本函数的确定方法，证明了长期成本函数是关于产量的幂函数，并指出了长期边际成本函数和长期平均成本函数之间的特殊关系。
Economics tells us that prices fall to marginal cost in the long run.
经济学告诉我们在长期中，价格降至边际成本。
The portion of the marginal-cost curve that lies above average variable cost is the competitive firm's short-run supply curve.
竞争企业的短期供给曲线是边际成本曲线在平均可变成本曲线以上的那一部分。
The portion of the marginal-cost curve that lies above average variable cost is the competitive firm's short-run supply curve.
竞争企业的短期供给曲线是边际成本曲线在平均可变成本曲线以上的那一部分。
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