并确定了生产规模的可行范围，并以矿井生产寿命期内获得净收益现值最大为目标，给出了一种确定矿井最优生产规模的经济数学方法。

The available ranges of production scale are determined based on the analysed result. The method to get the best production scale is determined for getting the most profit in the whole mine.

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数学方法在经济、医学、农业、建筑和艺术等现代知识的所有领域中都得到了广泛的应用。

Mathematical methods are used extensively in economics, medicine, agriculture, architecture, arts and all other fields of modern knowledge.

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数理经济学指的是应用数学方法来代表的经济理论和分析问题，提出经济。

Mathematical economics refers to the application of mathematical methods to represent economic theories and analyze problems posed in economics.

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Without worrying about the economics of it a second, how would we find that just as a math exercise?

不需要考虑经济学的理论,用数学的方法怎么来求解啊

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And this exercise of being able to work In these three different modes, economic intuition, graphs, and kind of nerdy high school math is a lot of what we want to get you used to as Economic Majors, just to be able to translate easily between those.

这个练习可以用,三种不同的方法解决,即,经济直觉,图表,和一些讨厌的高中数学,希望经济学专业的同学能掌握这些方法,对于这些方法能够随手拈来

耶鲁公开课 - 博弈论课程节选