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比较了含有两个参数的广义Heronian平均H_(p,W)(a,b)与幂平均M_q(a,b)的大小,得到了M_q(a,b)≥(≤)H_(p,w)(a,b)对于任意a,b>0成立的充要条件. 相似文献
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凸函数和凹函数的幂平均不等式 总被引:7,自引:1,他引:7
曹小琴 《数学的实践与认识》2000,30(3):363-366
文 [1 ]获得了当 α≥ 1时的凸函数的幂平均不等式 (3)、(4 ) [1] .本文指出文 [1 ]中的一个错误 ,并且得到了 α≤ 1时的凹函数的幂平均不等式 .修正和充实了文 [1 ]的定理 .同时讨论了当 α取其它值时不等式的情况 . 相似文献
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对平均准则的讨论一直是马氏决策过程研究的热点之一,近几年已从最优方程推广到最优不等式。本文系统地了介绍最优不等式的提出及其发展思路,目前已取得的成果等,同时也指出了有待于进一步研究的问题。 相似文献
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本文研究了涉及Hardy平均的不等式问题.借助于优超理论,获得了2维Hardy平均不等式成立的充要条件及n维Hardy平均不等式的充分条件.并为建立解析不等式和高维结果提供了一些方法. 相似文献
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李春龙 《数学的实践与认识》2012,42(19)
设n≥2,n∈N,β>θ>0,a∈R_+~n,r∈R,M_r(a)为a的r次幂平均,将确定参数λ,使(G(a))~(1-λ)(Mβ(a))~λ≤M_θ(a)成立.此结果推广了一些已知结论. 相似文献
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正定Hermite矩阵加权幂平均的行列式不等式 总被引:1,自引:0,他引:1
本文给出了m个正定Hermite矩阵加权幂平均的行列式的一个不等式,它是m个正数的加权益平均不等式的自然推广,也是正定Hermite矩阵行列式的凸性不等式的推广. 相似文献
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We find the greatest value p and least value q in (0,1/2) such that the double inequality G(pa+(1−p)b,pb+(1−p)a)<I(a,b)<G(qa+(1−q)b,qb+(1−q)a) holds for all a,b>0 with a≠b. Here, G(a,b), and I(a,b) denote the geometric, and identric means of two positive numbers a and b, respectively. 相似文献
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Chao-Ping Chen 《Journal of Mathematical Analysis and Applications》2008,345(1):86-89
A monotonicity result for the ratio between two generalized logarithmic means is established. As an application, an inequality of Alzer for negative powers is extended to all real numbers. 相似文献
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This paper presents a numerical method for solving nonlinear optimal control problems including state and control inequality constraints. The method is based upon rationalized Haar functions. The differential and integral expressions which arise in the system dynamics, the performance index and the boundary conditions are converted into some algebraic equations which can be solved for the unknown coefficients. Illustrative examples are included to demonstrate the validity and applicability of the technique. 相似文献
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《Optimization》2012,61(2):159-173
In this paper the Legendre polynomials method is applied in order to find the approximate solution of the linear quadratic optimal control problem with imposed inequality constraints. The computational procedure based on the obtained results, is presented 相似文献
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In this paper, the inequalities for the weighted mean of -convex functions are established. As applications, inequalities between the two-parameter mean of an -convex function and extended mean values are given.
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对一类不满足g(n)≠0的函数g讨论了第一积分中值定理中ξ=ξ(x)在x→+∞时的渐近性质,并对第二积分中值定理的中值ξ=ξ(x)的渐近性进行了探讨,给出一些相关的结果. 相似文献
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