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由任意性或存在性条件求参数范围问题,一直是高考数学考试的重点和难点。通过对近几年高考数学试题的研究,我们发现这类试题往往以压轴题的形式出现,所涉及的知识点内容覆盖面广,其中命题的核心在函数、方程、不等式等内容的交汇处。因为这类问题的解答难度较大,所以在高考数学复习过程中,就需要我们由浅入深、循序渐进,在理解知识内涵、认识问题本质上下功夫。同时站在数学思想和数学方法的高度提炼点睛,从学生的实际情况出发,匹
The problem of finding the range of parameters from arbitrariness or existential conditions has always been the focus and difficulty of the mathematics test for college entrance examinations. By studying the mathematics questions of the college entrance examination in recent years, we find that such questions often appear in the form of finale questions. The knowledge points involved cover a wide range of topics. The core of the proposition is at the intersection of functions, equations, and inequalities. Because it is difficult to answer such questions, in the process of reviewing mathematics in the college entrance examination, we need to go from shallow to deep, step by step, and understand the connotation of knowledge and understand the nature of the problem. While standing at the height of mathematical thinking and mathematics methods, the students will start from the actual conditions of the students.