【摘要】 用数学软件Mathematica 4研究一个关于三角形边长的几何不等式:(a-b)(b-c)(c-a)(a+b)(b+c)(c+a)<212.这里a,b,c是ΔABC的三边长,同时证明了上界是精确的.更多还原

【Abstract】 Using mathematical software Mathematica 4,we study the following geometric inequality:(a-b)(b-c)(c-a)(a+b)(b+c)(c+a)<122.here a,b and c are the lengths of triangle ΔABC.In the meantime we prove that the upper bound for the inequality is accurate.更多还原