期刊论文

Chu, Yu-Ming

英文

JOURNAL OF INEQUALITIES AND APPLICATIONS

1029-242X

2015

2015

1

1-11

10.1186/s13660-015-0921-z

Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11371125, 61374086]; Natural Science Foundation of Hunan ProvinceNatural Science Foundation of Hunan Province [14JJ2127]; Natural Science Foundation of Zhejiang ProvinceNatural Science Foundation of Zhejiang Province [LY13A010004]; National Training Programs of China for Undergraduate Innovation and Entrepreneurship [201411312003]; Foundation of Scientific Research Project of Fujian Province Education Department [JK2013051]

本校为通讯机构

In this paper, sharp bounds for cyclic sums of the ratio of the exradius to the sides of a triangle are established depending on the circumradius and inradius of the triangle. The best possible parameters for the expressions of bounds are derived. Moreover, an alternative bound for the ratio of the exradius to the sides of triangle, expressed by trig...