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本刊1985年第2期,先足同志在《也谈a_2~(1/2)+a_3~(1/2)>a_1~(1/2)+a_4~(1/2)的判定法》一文中,给出命题: 若 0≤a_1a_1~(1/2)+a_4~(1/2) ①成立。该文指出,此命题的条件是充分条件而非必要条件。我们可以把此命题的条件放宽而得: 命
In the 2nd issue of 1985, the first foot comrades in the “Jie Tan a_2~(1/2)+a_3~(1/2)>a_1~(1/2)+a_4~(1/2)” method In the article, a proposition is given: If 0≤a_1a_1~(1/2) ) +a_4~(1/2) 1 holds. The article points out that the conditions of this proposition are sufficient conditions and not necessary conditions. We can relax the conditions of this proposition: