【简答题】对函数 ,若存在 且 ,使得 (其中 A , B 为常数),则称 为“可分解函数”。 (1)试判断 是否为“可分解函数”,若是,求出 A , B 的值;若不是,说明理由; (2)用反证法证明: 不是“可分解函数”; (3)若 是“可分解函数”,则求 a 的取值范围,并写出 A , B 关于 a 的相应的表达式。
【简答题】The next day, we will (1)___________ (take) a bus to Mount Laoshan. After (2)_________ (enjoy) the (3)_________ (nature) beauty of Mount Laoshan, we will visit the city to buy some souvenirs(纪念品),and ...
【简答题】In the past, life changed slowly and people didn’t think about the future very much.Nowadays we often think about it because we know that there will be a lot of big changes.Life in the future will be ...