函数是高中数学中的一个重要内容,也是难点之一。主要体现在函数思想的运用,而掌握函数的一个重要手段就是分析函数的性质。从函数的性质入手来求解数学问题,也是解决函数问题的非常适用的工具。而我们在解决函数问题时往往容易忽视的地方主要体现在:一是忽视从函数的本质特性入手,如定义域、对应法则、函数的单调性、奇偶性等。二是容易忽视分析题设所给式子的结构特征。因此,我们可以从奇函数的定义出发,证明出奇函数的性质,函数的性质是函数 Function is an important part of high school mathematics, but also one of the difficulties. Mainly reflected in the use of the function of thinking, and grasp the function of an important means is to analyze the nature of the function. Starting from the nature of the function to solve mathematical problems, but also a very applicable tool to solve the function of the problem. And we tend to overlook the function problems are mainly reflected in the following: First, ignore the nature of the function from the start, such as the domain, the corresponding law, the monotonic function, parity and so on. Second, it is easy to overlook the structural features of the subheadings given by the analysis. Therefore, we can start from the definition of the odd function, prove the nature of the odd function, the function of the nature of the function