市场经济中常用的几个函数王良成（四川达县师专６３５０００）在市场经济迅猛发展的今天，生产者必然会遇到供应、需求、成本、收入、利润等问题，且这类问题常以函数的形式出现在近年的全国高考试题中．因此，用函数知识解决上述问题应成为中学生必须掌握的内容．本文介... Several functions commonly used in market economy Wang Liangcheng (Daxian Teachers College, Sichuan 635000) In today’s rapidly developing market economy, producers are bound to encounter problems of supply, demand, cost, income, profit, etc., and such problems often The form of the function appeared in the national examination questions in recent years. Therefore, using knowledge of functions to solve the above problems should be the content that middle school students must master. This article...