How is the long-run average cost curve (LRAC) derived?

长期平均成本曲线是怎么样得到的？

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It is proved that an optimal stationary policy exists under the criterion of long-run average cost.

在平均费用准则下，证明了最优平稳策略的存在性。

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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。

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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。

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