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函数3大宝,即函数3要素:定义域、解析式(对应法则)、值域.理解函数的解析式的定义;掌握列表法、图象法和解析式法;理解函数值域的概念;掌握求函数值域的常用方法;理解有关复合函数的值域分析;掌握函数解析式与定义域的常见求解方法以及在实际问题中的应用.这就是我们高中阶段对函数学习的基本要求.
Function 3 big treasure, that is, the function 3 elements: domain, analytic (corresponding law), value range. Understand the analytical definition of function; master list method, image method and analytic method; understand the concept of function range; grasp The common method to find the range of the function, to understand the range analysis of the complex function, to master the common solution to the function analytic formula and the domain, and to the practical problems .This is our basic requirement for function learning in senior high school.