我们把未给出具体解析式的函数称为抽象函数。由于它既能考查函数的概念与性质,又能考查学生的思维能力及对函数思想的理解程度,因而在高考中备受青睐。下面结合实例,介绍抽象函数题几种巧妙的解法。一、活用定义与性质以函数“三性”为突破口,紧扣其定义及性质间的相互联系,经推理或计算求解问题。 We call a function that does not give a concrete resolution as an abstract function. Because it can not only examine the concept and nature of the function, but also examine the students’ thinking ability and the understanding of the function of thought, which is highly favored in the college entrance examination. The following combination of examples, introduced several abstract function problem solution. First, the use of the definition and nature of the function “three ” as a breakthrough, closely linked to the definition and nature of the inter-relationship between, by reasoning or calculation to solve the problem.