与多个变量有关的数学问题统称为多元问题,常见于函数、解析几何、不等式等知识中,是高考中的难点与热点.多元问题因其变量不止一个,结构相对复杂,方法灵活多变,学生往往失分严重.从解法上看,在“多元视角”下,对某些特殊类型的多元问题,可结合题目实际直接考虑线性规划法、不等式法、数形结合法等.但考查中频频出现的还是间接运用转 Mathematical problems associated with multiple variables, collectively referred to as multivariate problems, are commonly found in functions, analytic geometry, inequalities and other knowledge, which are difficult and hot spots in college entrance examination.Multivariate problems are characterized by more than one variable, complex structure and flexible methods, Students often lose points serious.From the solution point of view, in the “multi-perspective”, for some special types of multiple problems, can be combined with the actual problem directly consider the linear programming, inequality law, the number of combination method, etc. However, test Frequent or indirect use of the turn