已知数列
满足
则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd14def684d0eb6a997dddb7e741e5d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
23-24高三上·湖南娄底·期末 查看更多[4]
更新时间:2024-01-31 17:50:51
|
相似题推荐
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】设数列
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf2814d2c0488d227aa810a178029ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】已知数列
满足
,
,
,
是递增数列,
是递减数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd5367f5c88db960f534311d3476ef5.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2811874029a67158e151924440499a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf33b2a94eae16760d746f9b4b8dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8194a62bc60a9da9b5cf76f9dc0fa09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd5367f5c88db960f534311d3476ef5.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐1】如图,已知抛物线
及两点
和
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe03f333e045c659dfd9e8b75662dc78.png)
.过
,
分别作
轴的垂线,交抛物线于
,
两点,直线
与
轴交于点
,此时就称
,
确定了
.依此类推,可由
,
确定
,…,记
,
,….给出下列三个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/b45d669a-0a0d-430b-b029-5787cbf26c2b.png?resizew=158)
①数列
是递增数列;
②对任意
,
;
③若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b54e384a072508d4754e0f1636f8f66.png)
,则
.
其中,所有正确结论的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d3d0716aa985a711cab73d8647d87a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f25a1f1b917a76f3bb2f17edebcd3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe03f333e045c659dfd9e8b75662dc78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1e005baa1be0da8cdf9173a9a46bd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc9076974ebd6331d67055302be8167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c165d882c85efe1390e3f7c86ba852f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2678edb6a0e9fce645fd799be796dfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750335e0a1896eb270407e86335a85a2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/b45d669a-0a0d-430b-b029-5787cbf26c2b.png?resizew=158)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36460040ddea4761eee10d537b14a1f6.png)
②对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1505d56f0b35fe7f2de1fe1888036e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228ebafd568c41d394596b3bbbe81759.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2913f8d730167b2bc9bbbbf809de4b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b54e384a072508d4754e0f1636f8f66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4aacabc6610e056ba1ac3ca9caa7c8.png)
其中,所有正确结论的序号是
您最近一年使用:0次
【推荐2】已知数列
的首项为1,且
(
),则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7183a780214d730d58171896013524e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2771c5f04582c545e0f9afc8a2cb9597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb38c0f6faeb81092f6039beab4a525.png)
您最近一年使用:0次