参数λ的取值范围的添补

Addition to the Value-taking Range of Paramter λ

文[1]推出不等式:若0<x≤y≤z且z≥x+y,则x2+y2+z2≥65(xy+yz+zx)。文[2]将上述不等式作了深刻地推广。该文对推广进行了添补,使之更完善。

Inequtity proposed in Eessay 1：if 0〈x≤y≤zthen z≥x＋y,therefore x^2＋y^2＋z^2≥6/5（xy＋yz＋zx）. While Essay 2 promotes the inequality mentioned above,and make some additions to enable it become more perfect.