关于“取值范围”一类题的求解  

On the Solution to the Mathematical Questions of Value Range

作　　者：汪家军[1] 

机构地区：[1]襄樊职业技术学院汽车工程学院,湖北襄阳441050

出　　处：《襄樊职业技术学院学报》2011年第3期25-28,共4页Journal of Xiangfan Vocational and Technical College

摘　　要："取值范围"这类数学题,因其较好地体现了运算能力、思维能力、空间想象能力等与"求极值最值"一起被列为高考的压轴题;从寻求相关函数、依据充要条件、设置辅助函数,进行数形结合、借助向量意象、造就相关图形、构建位置关系、利用图像关系等几个方面,对求解取值范围一类的数学题进行了求解探究。The mathematical questions of value range together with the solving extremum values,maximum and minimum values,is rated a final test question of mathematics for college entrance examination because it can embody the ability of thinking,imagining and calculating.This article studied the ways to solve the questions of value range from exploring correlation functions,offering Accessorial Function,combining number and form,forming relational graphs,constructing and taking advantages of the figures.

关 键 词：数学问题 取值范围 求解 

分 类 号：G633[文化科学—教育学]