关于实系数三次方程根的表示式

On Representative Expression of Root of Real Coefficient Cubic Equation

由域论的Galois理论,我们知道实系数三次方程有根式解。本文再给出一种用三角函数与双曲函数来表示的根的表示式,使得对某些实系数三次方程的求解问题更加容易。

Based on the Galois theory,we know the root solution of real coefficient cubic equation. This paper gave another kind of expression of root, uhich makes some questions of real coefficient cubic equationeasier.