含多个变量的问题是近年来数学高考、模考中常见的题型,这类问题一般短小精致、灵活多变.学生面对多个变量、多个关系式,解题没有清晰的思路,找不到解决问题的切入点,推算往往没有明确方向,常常半途而废、无果而终.本文选取不等式、函数、解析几何、数列中几个例子,谈谈解决多变量问题的一般策略.一、含多个变量的不等式问题 The problem with multiple variables is a common type of math entrance exams and mode exams in recent years. Such problems are generally short, delicate and flexible. Students face multiple variables and multiple relations and do not have a clear idea of ​​solving the problem. Can not find the starting point to solve the problem, the calculation is often no clear direction, often halfway, fruitless.This article selected inequalities, functions, analytic geometry, a few examples in the sequence, to talk about the general strategy to solve the problem of multivariate.First, Inequalities with multiple variables