摘要
提供了一元三次方程 y3+ py + q =0的一个新解法 ,其三个根可统一地由公式 :y =2 -p3 sinθ给出 ,其中θ满足 :sin3θ =-3 3 q2 p -p.
The article presented a new method of finding solution to the one element cubic equation y 3+py+q=0 . Their roots y 1, y 2 and y 3 of the equation are given in a united formula y=2 p3 sinθ in which parameters p and q can be positive or nagative, and θ satisfies sin3 θ = 33q/2p p.
