不等式中恒成立问题是高中数学学习和考试中最常见的题型之一。对于这类问题,学生经常是束手无策,不知道从哪里下手,找不到问题的突破口,因而感觉十分困难。解决这类问题主要是运用化归与转化的数学思想、数形结合思想,借助函数的性质、导数在最值中的应用予以求解。以下是笔者在平时的教学中的一些经验总结,着力在问题的类型特点和解答策略方面给大家一些思考和借鉴。一、分离参数,转化为求函数最值法 The constant problem of inequality is one of the most common questions in high school mathematics learning and examination. For such problems, students often feel helpless, do not know where to start, can not find a breakthrough in the problem, so I feel very difficult. Solve these problems is mainly the use of naturalization and transformation of mathematical thinking, numerical combination of ideas, with the nature of the function, the derivatives in the most value application to be solved. The following is the author in the usual teaching of some experience summary, focus on the type of problem characteristics and strategies to give you some thoughts and lessons. First, the separation of parameters, converted to the function of the most value method