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按照某学者的理论,假设一个人生产某产品单件成本为a元,如果他卖出该产品的单价为m元,则他的满意度为m/(m+a);如果他买进该产品的单价为n元,
According to a scholar’s theory, suppose that a person’s cost of producing a single piece of a product is a dollar, and his satisfaction is m / (m + a) if he sells the unit at a price of m dollars; if he buys The unit price of the product is n yuan,