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一元二次方程根的分布问题的讨论是高中数学的一个难点,学生往往不能正确找出根的一种分布成立的条件。本文介绍三种方法,供解题时择优选用。一、利用二次函数图像,考察判别式、端点
The discussion of the distribution of the root of the quadratic equation of one yuan is a difficult point in high school mathematics. Students often cannot correctly find out the conditions for the establishment of a distribution of roots. This article describes three methods for selecting the best solution. First, use quadratic function images to examine discriminants, endpoints