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函数是每年高考的热点,而抽象函数性质的运用又是函数的难点.所谓抽象函数是指没有给出具体解析式的一类函数.此类函数试题既能全面地考查学生对函数概念的理解及对性质的推理论证能力,又能综合考查学生对数学符号语言的理解和接受能力,以及对一般和特殊关系的认识,因此备受命题者的青睐,在近几年的高考中经常出现.由于这类问题本身的抽象性和其性质的隐
The function is the hot spot of annual college entrance examination, and the use of the abstract function is the difficulty of the function.The abstract function refers to a kind of function that does not give a specific analytic formula.Examples of such functions can comprehensively examine students’ understanding of function concepts And the nature of the ability of reasoning and argumentation, but also a comprehensive examination of students’ understanding and acceptance of mathematical symbols language, as well as the general and special relations, so many proponents of the favor, the college entrance examination in recent years often appear. Due to the abstraction of such issues and their implicit nature