【摘要】 本文建立的证券组合投资的数学模型采用风险系数 β作为控制证券投资风险的参数 ,其经济意义明确 ,实用性强。该模型应用于证券组合投资 ,效果明显 ,操作方便。更多还原

【Abstract】 This article constructed a mathematical model,and concluded that the economic meaning was definite and practical if we used risk coefficient β to control the risk of security portfolio.The model could be applied to security portfolio,which was convenient in practice.更多还原