数学中的恒成立问题实际上就是在一定的条件下,不等式中的参数取值范围问题,它贯穿于高中数学的始终,涉及知识面广,综合性强,所给题目数学语言抽象,不容易理解和接受,学生很难解决,是高中数学的一个难点,也是高考命题的一个热点。原因是“含参不等式恒成立问题”把不等式、 The problem of constant establishment in mathematics is actually the problem of parameter range in inequality under certain conditions. It runs through mathematics in high school and involves a wide range of knowledge and comprehensiveness. It is not easy to give math language abstraction to the subject Understanding and acceptance of students difficult to solve, is a high school mathematics difficult, but also a hot topic college entrance examination. The reason is that “inequality with parametric constancy problem ” the inequality,