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In mathematics, the Lehmer mean of a tuple of positive real numbers, named after Derrick Henry Lehmer,〔P. S. Bullen. ''Handbook of means and their inequalities''. Springer, 1987.〕 is defined as: : The weighted Lehmer mean with respect to a tuple of positive weights is defined as: : The Lehmer mean is an alternative to power means for interpolating between minimum and maximum via arithmetic mean and harmonic mean. == Properties == The derivative of is non-negative : thus this function is monotonic and the inequality : holds. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Lehmer mean」の詳細全文を読む スポンサード リンク
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