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第一周不等式的性质算术平均数与几何平均数A组一、填空题 (每小题 5分 ,共 4 0分 )1.给出四个条件 :1b 0 a;2 0 a b;3a0 b;4 a b 0能推得 1a 1b 成立的是(填序号 ) .2 .若 a 2 ,b 2 ,比较大小 :ab a + b.3.在 R+中 ,若 ba b + ma + m,则 a b(填 或) .4 .已知 6
The first week of the inequalities of the nature of the arithmetic mean and the geometric mean A group I. Fill in the blank (5 points per problem, a total of 40 points) 1. Give four conditions: 1b 0 a; 2 0 ab; 3a0 b; 4 ab 0 can be derived 1a 1b is established (fill number) .2 . if a 2 ,b 2 , compare size: ab a + b.3. In R+, if ba b + ma + m, then ab ( Fill or) .4 . Known 6