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二次函数是历年中考试题的重点和压轴难点.它是通过足够的材料去分析,引导学生从具体的个性中抽象出来,命题重点是求二次函数解析式,因此在学习时要引起足够重视.从题目的特点入手,构思要缜密,思路流畅,通过知识的学习,例题归纳,习题总结,领会二次函数和系统地掌握.一、二次函数解析式的确定二次函数渗透与联系面广,倍受中考采纳.二次函数将概念、函数方程思想,数形结合思想渗透到中考各分支.
Quadratic function is the focus of the exam questions over the years and the difficulty of the finale.It is through enough materials to analyze and guide students to abstract from the specific personality, proposition focus is to find the quadratic function analytic formula, so in learning should pay enough attention Beginning with the characteristics of the subject, the conception should be meticulous and the thinking should be fluent, through the study of knowledge, the induction of cases, the summarization of exercises, the comprehension of the quadratic functions and the systematic mastery of the analysis of the quadratic functions. Widely, much adopted in the test. The second function of the concept, the concept of functional equations, numerical combination of ideological infiltration to the branches of the exam.