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在整个高中数学的学习过程中,学生会经常在一些较难的题目中看到“恒成立”这一字眼,说的严重点有很多学生都胆战心惊,而这类问题并不可怕,解决这类问题的关键在于帮助学生理解透问题的本质,把握问题的特点。“恒成立”问题大体就只有几类,当然它对很多基础知识的理解要求也很高,其中还渗透了很多数学方法,如数形结合,换元,化归,
Throughout the learning process of high school mathematics, students often see the phrase “constant establishment” in some difficult topics. Many students are scared to say that such problems are not terrible. To solve this problem The crux of the class problem is to help students understand the essence of the problem and grasp the characteristics of the problem. Of course, it has a lot of understanding of basic knowledge, which also infiltrates a lot of mathematical methods, such as the combination of number and form, change yuan, return to normalization,