Demand curve — a function that relates the quantity of a commodity or serve consumers wish to purchase to the price of that commodity.

需求曲线——一个关联到商品数量或服务消费者愿望的与这个商品购买价格关系的函数。

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Under the condition that the customers consider the current price and advertising level and have the ability to "learning" the past price and advertising, a "learning" demand function is developed.

当顾客不仅考虑当前的价格和广告水平而且也考虑以往的交易价格和广告水平条件下，提出了一个具有“学习”功能的竞争性需求函数。

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Convex function of demand, convex distribution of price and an optimal model for coexistence of multi-prices are established.

建立了商品销售中的凸需求函数，凸分布和多种价格并存的优化模型。

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As with any excise tax, the amount of revenue a weed tax could generate is a function of four big things: The tax rate, supply, demand, and price.

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But the spread between the price of the raw material and the price of the finished good is a function of the supply of ethylene-making capacity and the demand for ethylene.

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