【摘要】 应用图解法和规划法给出了存在无风险资产时投资者的有效边界,特别是存在无风险资产情况下用规划法确定有效边界的推导过程弥补了许多文献对规划法确定有效边界的不足,可以指导投资者按照本文给出的结果进行实际的投资操作。更多还原

【Abstract】 In the paper we present the efficient boundary of portfolio allowing risk-free assset investment with two methods,graphics and programming analysis,especially with the method of programming analysis we remedy defects in many documouts.Investors may invest accord-ing to the results presented in the paper in practice.更多还原