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求函数自变量取值范围是初中函数的一个基本内容,在历届中考数学中占有一定的比例。为了使同学们能更好地掌握求函数自变量取值范围的方法,下面归纳几种常见类型供同学们参考。
Finding the range of the function’s independent variables is a basic content of the junior high school function, which occupies a certain proportion in the mathematics of the previous examination. In order to enable students to better grasp the method of finding the value range of the function’s independent variables, the following summarizes several common types for the students to refer to.