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函数是中学数学的核心内容,是高中数学知识的一条主线,也是历年高考数学的考查重点之一。高考函数问题一般以选择题、填空题的形式出现,经常与其他相关知识加以交汇,知识覆盖面广、综合性强、思维力度大、能力要求高。函数问题是高考命题者经常设置陷阱的场所,也是考生比较容易出错的地方。1.注意分类讨论
Function is the core content of high school mathematics, high school mathematics is a main line of knowledge, but also over the years college entrance examination math one of the key points. Generally speaking, the questions of the entrance examination function appear in the form of multiple-choice questions and blank-fill questions, and often meet with other relevant knowledge to cover a wide range of knowledge, strong comprehensiveness, great thinking and high ability requirements. Function problem is the place where college entrance examination proposition often set traps, but also candidates more prone to error. 1. Pay attention to the classification discussion