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一 考点概述 函数是高中数学极其重要的概念,函数思想是解决数学问题的重要思想之一,它贯穿于高中数学的全过程,因此历年全国高考试题中函数内容占有较大的比例。根据对近几年高考试题中函数内容的分析研究,考查的热点分布在以下几个方面。 1.关于集合概念的理解以及集合间关系的运算问题。这类试题主要以选择题、填空题的形式出现,以考察“三基”知识为主。 例1 (’93高考题)设全集Ⅰ={0,1,2,3,4},A={0,1,2,3},B={2,3,4},则A∪B=( )。 (A){0}; (B){0,1}; (C){0,1,4}; (D){0,1,3,4}; 本题主要考察集合间的关系。易知选(C)。
An Overview of Test Centers Functions are an extremely important concept in high school mathematics. Functional thinking is one of the important ideas for solving math problems. It runs through the entire process of high school mathematics. Therefore, the content of functions in national high test questions has occupied a large proportion over the years. According to the analysis and research on the function content of high exam questions in recent years, the hot spots examined are distributed in the following aspects. 1. Comprehension of the concept of collections and the operation of relations between collections. Such questions mainly appear in the form of multiple-choice questions and blank-fill questions to examine the “three-base” knowledge. Example 1 (’93 college entrance examination question) Let the full set I={0,1,2,3,4}, A={0,1,2,3}, B={2,3,4}, then A∪B =( ). (A) {0}; (B) {0,1}; (C){0,1,4}; (D){0,1,3,4}; This question focuses on the relationship between collections. Easy to know (C).