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抽象函数是指没有给出函数的具体解析式或图象,只给出了一些体现函数特征的式子的一类函数,这类函数大多是根据教材中某些函数的性质与结构特征,经过抽象、概括而成的.函数性质则通过代数表述式给出.抽象函数的相关题目往往是在相关知识点的交汇处设计的,主要考查的是函数的概念和知识的内涵及外延的掌握情况、逻辑推理能力、抽象思维能力和数学后继学习的潜能.在解决这类问题时,同学们常感到束手无策.本文笔者从几个问题的方面来说明以供参考.
The abstract function refers to a specific analytical formula or image that does not give a function, and only gives some functions that represent the features of the function. Most of these functions are based on the properties and structural features of some functions in the textbook. Abstract and generalized. The nature of the function is given by the algebraic expression. The relevant topic of the abstract function is often designed at the intersection of the relevant knowledge points. The main test is the concept of the function and the knowledge of the knowledge and extension of the master , logical reasoning ability, abstract thinking ability and the potential of mathematics learning in succession. When solving such problems, students often feel helpless. This article from the author of several issues to illustrate for reference.