摘要
利用对称递减重排的方法得到了α级的Ｒｏｂｅｒｔｓｏｎ函数族导函数的积分平均不等式，并利用此不等式得到了弧长和象域面积的精确估计。
In this paper,the integral means of the derivative of Robertson functions of order α is obtained by appealing rearrangements in symmetrically decreasing.The length of the image of the circle and the area of the image of the disk are determined.
出处
《石油大学学报（自然科学版）》
CSCD
1998年第1期91-93,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
积分平均
Robertson函数
导函数
symmetrically decreasing rearrangement
integral means
extreme point
