1 . 已知数列
的前n项和为
,
,且
(
,2,…),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa76d84d33d760354b22ea84fa2eea1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-01更新
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9卷引用:湖北省黄石市部分学校2023-2024学年高二上学期期末联考数学试卷
2 . 如图所示,点
为
的边
上一点,
,
为
上一列点,且满足:
,其中数列
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d94082f5bfb914cfd8a09f73f193ebb.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535b26625378bb65a373d6fe9d16f67b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0df3866e1f0a726d789c987fab13e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6ab5c911ac14657f4687c82275628e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/467b986feec2731678265018257bbcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d94082f5bfb914cfd8a09f73f193ebb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/b524a7c2-76be-444d-b559-2857482880e1.png?resizew=267)
您最近一年使用:0次
2019-03-26更新
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1835次组卷
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3卷引用:【市级联考】湖北省八市(黄石市.仙桃市.天门市.潜江市.随州市.鄂州市.咸宁市.黄冈市)2019届高三3月联合考试理科数学试题