分类导航
不等式 不等式的基本性质: (1)a?b?0?a?ba?b?0?a?b基本性质的推论: (1)a?b,c?d?a?c?b?d (2)a?b,c?d?a?c?b?d (3)a?b?0,c?d?0?ac?bd (4)a?b?0,0?c?d?(5)a?b?0?1an(2)a?b?a?b (3)a?b,b?c?a?c (4)a?b?a?c?b?c (5)a?b,c?0?ac?bc a?b,c?0?ac?bc ac?bd ?...