Since this is a concave function, it's not just the expected value.
由于这是一个凹函数，它不仅仅是期望值。
The graph of a concave function is always below its tangent.
一个凹函数的图象总在它的切线的下方。
In this paper, concave function and its properties are discussed. And concave function's application in optimization are shown as well.
研究与凸函数对应的凹函数及其性质，并指出了凹函数在最优化中的应用。
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.
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。
There are convex function and concave function, Which are of expansive application in many aspects, especially in inequality proof and error estimate.
凸(凹)函数有很多特性，这些性质可广泛应用于不等式的证明及误差估计等方面。
There are convex function and concave function, Which are of expansive application in many aspects, especially in inequality proof and error estimate.
凸(凹)函数有很多特性，这些性质可广泛应用于不等式的证明及误差估计等方面。
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