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抽象函数为高中阶段函数部分的一个难点,在以往高考中经常在解答题中出现.而学生由于不能充分理解抽象函数而得分情况不尽人意.现将平时常见的抽象函数进行总结,希望能有助于学生解题.一、抽象函数的特点总结如下:1.知性质、不知解析式2.它代表了一类型的函数3.常用赋值法解题
The abstract function is a difficult part of the high school stage function. In the past college entrance exams often appeared in the answer questions. The students scored poorly because they could not fully understand the abstract function. Now we abstract the common abstract functions and hope to have them. Help students to solve problems. First, the characteristics of abstract functions are summarized as follows: 1. The nature of knowledge, I do not know analytical formula 2. It represents a type of function 3. Common valuation methods to solve problems