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Several Inequalities Related To Identric Mean And Power Mean

Posted on:2011-11-07Degree:MasterType:Thesis
Country:ChinaCandidate:C S ZhangFull Text:PDF
GTID:2120360308969716Subject:Applied Mathematics
Abstract/Summary:PDF Full Text Request
In this paper, we investigate the some equalities related to identric mean I(a, b), logarithmic meanL(a, b), and power meanMp(a, b) of two positive real number a and b, and the inequality relationship of harmonic meanH(a, b), iden-tric mean I(a, b), and power meanMp(a, b) of two positive real number a and b. Under some certain constant exponent, we obtain a suitable order p of power meanMp(a, b). Moreover, we use Taylar expansion to examine that this exponent is the optimal one.Firstly, in Charpter 2, we study the relationship of identric mean I(a, b), log-arithmic meanL(a, b), and power mean Mp(a, b) of two positive real number. The purpose of this charpter is to founded some inequalities of identric mean I(a, b) logarithmic meanL(a, b), and power meanMp(a, b) of two positive real num-ber. By using the method of limit comparison, together with Taylor expansion of special function, we obtain some inequalities of identric mean I (a, b), logarith-mic meanL(a, b), and power meanMp(a, b) under some certain constant exponent conditions. The Taylor expansion imply that the order p of these inequalities is optimal to our results if p is some special contant. At same time, we also examine that our results is in accord to the classical ones.Later, in Charpter 3, we study the relationship of harmonic mean H(a,b), identric mean I(a, b), and power meanMp(a, b) of two positive real number. The purpose of this charpter is to founded some inequalities of identric mean I(a,b), harmonic mean H(a,b), and power meanMp(a, b) of two positive real number. With the same progress, be using the method of limit comparison, together with Taylor expansion of special function, we investigate the convexity of some special function to obtain some inequalities of identric mean I (a, b), harmonic meanH(a,b), and power meanMp(a, b) under some certain constant exponent conditions. We also use the Taylor expansion to examine the order p of these inequalities is op-timal to our results if p is some special contant. Moreover, we also examine that our results is in accord to the classical ones.
Keywords/Search Tags:power mean, logarthmic mean, harmonic mean, identric mean
PDF Full Text Request
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