函数问题是高中数学中热点问题也是难点问题,往往以解答题的形式出现,有时会作为压轴题,学生对于这类题目往往感到束手无策.但综观近几年高考函数解答题,我们发现命题特点有以下几方面:(1)以抽象函数为载体,在知识边缘处构造一种新的函数; Function problem is a hot topic in high school mathematics is also a difficult problem, often in the form of answer questions, and sometimes as a finale, students often feel helpless for such topics .But in recent years, the entrance examination function answer questions, we found proposition features The following aspects: (1) Abstract function as a carrier, construct a new function at the edge of knowledge;