论文部分内容阅读
一元二次方程的根的判别式是初中代数的重要内容之一 ,它在中学数学中有着广泛的应用 ,成为近几年全国各地中考的热点问题 .为了帮助读者更好地掌握好这部分知识内容 ,现对它在初中数学中的应用进行归纳 ,以餮读者 .应用一 :判断一元二次方程 (或二元二次方程组 )的根的情况 ;
The discriminant of the root of the one-dimensional quadratic equation is one of the important contents of junior high school algebra. It has a wide range of applications in middle school mathematics and has become a hot topic in the examinations in various parts of the country in recent years. In order to help readers to better grasp this part of knowledge The content is now summarizing its application in junior high school mathematics to readers. Application 1: Judging the condition of the root of a unitary quadratic equation (or binary quadratic equations);