三次方程的判别式４３００６２湖北大学数学系曹钟壁大家都熟知实采数二次方程判别式是否。利用它可以判别二次方程有两相等实根，有两不等实根及有两共轭虚根三种情况．本文将介绍三次方程的判别式，以供学生课外阅读．设一个实系数三亥方程三个根为ｘ１、ｘ２、ｘ３，我... Discriminant of cubic equation 430062 Department of Mathematics, Hubei University Cao Zhongbi It is well known whether the discriminant of the quadratic equation of the real number is. It can be used to judge that the quadratic equation has two equal real roots, two unequal real roots and two conjugate false roots. This article will introduce the discriminant of the cubic equation for students to read after class. Set a real coefficient Sanhe equation three roots for x1, x2, x3, I...