名校
解题方法
1 . 已知数列
满足
,且
.
(1)求数列
的通项公式;
(2)设
,且数列
的前n项和为
,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e9c64ed9531946cf84c3e86a3fb114.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192db87f37d06984bb2788bb5406b07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0714e563bdb90c8fe50322eef1a0ece3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-04-26更新
|
1642次组卷
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6卷引用:安徽省阜阳市第三中学2023-2024学年高二上学期二调考试(12月)数学试题
安徽省阜阳市第三中学2023-2024学年高二上学期二调考试(12月)数学试题江苏省盐城市大丰区等5地(江苏省阜宁中学等2校)2022-2023学年高二上学期1月期末联考数学试题(已下线)湖南省新高考教学教研联盟2023届高三下学期4月第二次联考数学试题变式题17-22广东省广州市第八十九中学2023-2024学年高二上学期期末模拟数学试题(一)(已下线)专题04 数列(5)四川省成都市成都外国语学校2023-2024学年高二下学期3月月考数学试题
名校
2 . 设数列
的前
项和为
,
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff109e3d6315cfd898a27593595f7250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342a713d0a5a3f44c25f1eb56de88ad7.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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2023-04-04更新
|
615次组卷
|
3卷引用:安徽省太和中学2022-2023学年高二下学期数学期中复习试卷
名校
3 . 已知数列
的前
项和为
,首项
且
,若
对
恒成立,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/ca751cf2820e507eb4c80905a9f22b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb01f7deab42325cd0c67d9c5543b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2019-06-16更新
|
719次组卷
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5卷引用:安徽省阜阳市临泉第一中学2022-2023学年高三上学期期中数学试题
名校
4 . 已知各项均为正数的数列
满足
,且
,其中
.
(1)求数列
的通项公式;
(2)设
,数列
的前
项之和为
,对任意的
,总有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117abf5e481bd8de24c42f2f68abb9ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c597a4548ff7be671666bed67edc7e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bc5ce1b00bd6c17064b581e827798d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179e0b3a52e61d46e6ac16c4346037cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34fcdc006a3bd6b19862b3ed7a7b992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bc5ce1b00bd6c17064b581e827798d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34fcdc006a3bd6b19862b3ed7a7b992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2017-11-27更新
|
602次组卷
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3卷引用:安徽省阜阳市太和中学2017-2018学年高二上学期期中考试数学(理)试题
5 . 已知数列
的前
项和为
,
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9969b8d7bdc03fe2484298f769464d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3172a2dfbce3ce32fd909ff548e75b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177b164ee850b5c36a3632155a59125e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
名校
6 . 已知数列
满足
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc90a28c4696b86082005e39760d6d1.png)
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdc7c9fcb03159c3dcb2cf5421b0e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc90a28c4696b86082005e39760d6d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc9fe9760c13214cf44f7a10ff74fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdc7c9fcb03159c3dcb2cf5421b0e10.png)
A.![]() | B.![]() | C.![]() | D.3 |
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