THE FUNCTION (bx − ax)/x: LOGARITHMIC CONVEXITY AND APPLICATIONS TO EXTENDED MEAN VALUES

نویسنده

  • FENG QI
چکیده

In the present paper, we first prove the logarithmic convexity of the elementary function b x −a x x , where x 6= 0 and b > a > 0. Basing on this, we then provide a simple proof for Schur-convex properties of the extended mean values, and, finally, discover some convexity related to the extended mean values.

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تاریخ انتشار 2009