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本题以能力立意为主线,注重对学生函数本质认识的考查.初中数学学习过程中,学生已先后经历过一次函数、二次函数的学习过程,对函数有了一定的认识,初步掌握了研究函数的一般方法,理解了方程与函数的关系,能借助函数的观点看方程.本题是在学生已有函数学习活动经验的基础上,以新函数为载
In the process of junior high school mathematics learning, the students have already experienced the learning function of one-time and second-order functions, have some understanding of the function, and have mastered the research function Of the general method to understand the relationship between the equation and the function can look at the equation with the point of view of the function.This question is based on the experience of students in existing function learning activities,