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求绝对值项的和式的最小值是初等数学研究中的一个难点。本文就minni=1∑Piqix-bi这一问题给予透彻的解决。
It is a difficult point in elementary mathematics to find the sum of the sum of the absolute value terms. This article gives a thorough solution to the problem of minni = 1ΣPiqix-bi.