(2) On the effect boundary, risk is return「s rigid monotony increase by degrees convex function , return is risk」s rigid monotony increase by degrees concave function.
(2)在有效前沿上,风险是收益的严格单调递增凸函数,收益是风险的严格单调递增凹函数。
On the effect boundary, risk is return「s rigid monotony increase by degrees convex function , return is risk」s rigid monotony increase by degrees concave function.