对于函数f(x),若存在x 0 ∈R,使得f(x 0 )=x 0 ,则称x 0 为函数f(x)的不动点,若函数 f(x)= x 2 +a bx-c (b,c∈ N * ) 有且仅有两个不动点0和2,且 f(-2)<- 1 2 . (1)试求函数f(x)的表; (2)已知各项不为0的数列{a n }满足 4 S n ?f( 1 a n )=1 ,其中S n 表示数列{a n }的前n项和,求数列{a n }的通项公式.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【单选题】Although the small room is the large one, it is more beautifully decorated.
【简答题】A.The room is too small for the audience. B.The show is very difficult to understand. C.The light in the room is not bright enough. D.The crowd is Very noisy.
【单选题】Between the distal, or far, end of the stomach and the small intestine is the___. The region of the stomach leading into this ___, the___, is important in regulating how rapidly food moves into the sm...
【简答题】Diaoyu Dao and its affiliated (附属) islands, which consist of(由…组成)Diaoyu Dao, Huangwei Yu, Chiwei Yu, Nanxiao Dao, Beixiao Dao, Nan Yu, Bei Yu, Fei Yu and other islands, are in the northeast of China’...