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一道中考压轴题,往往覆盖了较多的知识点,蕴藏着许多种数学思想方法,能考查学生分析问题解决问题的能力,因而备受广大师生关注.本文对一道中考压轴题进行了研究,从而获得对中考复习教学的一点启示,在此与各位同仁分享.一、典型例题问题(2014年成都中考题)如图1,已知抛物线y=k8(x+2)(x-4)(k为常数,且k>0)与x轴从左至右依次交于A,B两点,与
A mid-school exam questions, often covering more knowledge points, contains many kinds of mathematical thinking methods, students can examine the ability to analyze problems to solve the problem, which has attracted the attention of teachers and students.This paper on a test of the F- In order to obtain a little enlightenment for senior high school entrance examination review teaching, share with you here. First, the typical examples of questions (2014 Chengdu exam questions) As shown in Figure 1, the known parabola y = k8 (x +2) (x-4) ( k is a constant, and k> 0) and the x-axis from left to right turn to A, B two-point, and