“含参不等式恒成立问题”把不等式、函数、三角、几何等内容有机地结合起来,其以覆盖知识点多,综合性强,解法灵活等特点而备受高考、竞赛命题者的青睐。另一方面,在解决这类问题的过程中涉及的“函数与方程”“化归与转化”“数形结合”“分类讨论”等数学思想对锻炼学生的综合解题能力,培养其思维的灵活性、创造 “Involute inequality constitutive problem ” The inequality, function, trigonometry, geometry and other content organically combine, its knowledge to cover more points, comprehensive, flexible solution and other characteristics of the college entrance examination, race proponents of all ages . On the other hand, in the process of solving this kind of problem, it involves the combination of mathematical function such as “function and equation ” “conversion and conversion ” “” Problem-solving skills, develop the flexibility of their thinking, to create