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在高中数学中,函数单调性是函数性质中极为重要的一种,在解不等式、求函数值域、比较函数大小等方面都需要用到函数的单调性。所以对判断函数单调性的方法进行研究非常有必要,同学们要掌握多种方法解决函数单调性问题,做到多管齐下,才能以不变应万变。一、定义法定义法判断函数的单调性是一种非常重要的方法,不能因为它只是一种基本的简单方法就忽视它的重要性。定义法思路清晰、简洁明了,有着其它方法所不具备的优势,所以在平时的练习中应当注重这种方
In high school mathematics, monotonicity is a very important function in the nature of the function, monotonicity of the function needs to be used in the solution of inequalities, the value range of the function, the size of the comparison function. Therefore, it is very necessary to study the method of judging the monotonicity of the function. Students should master a variety of methods to solve the monotonicity of the function, so that they can be managed in a multi-pronged approach. First, the definition of law Define the law to determine the monotonicity of the function is a very important method, not because it is just a basic simple way to ignore its importance. The definition of the idea of a clear, concise, with other methods do not have the advantages, so in the usual practice should pay attention to this square