名校
解题方法
1 . 已知等差数列
中,
,
.
(1)求
的通项公式.
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/581b5e9ac80bcfa3c6e7d9377250ee3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cb410b15fe6fd6e74bf6adb637274f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82ecbca314a76a2cc7ba40066813296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2 . 已知等差数列
的前n项和为
,
,
.
(1)求
的通项公式;
(2)若
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117dd04afc6d1a34828c7f9da7663a56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2c8dedfa4e56af166f7a3f6bd91ad2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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3 . 已知
为等差数列,
为各项均为正数的等比数列,
.
(1)求
和
的通项公式;
(2)求
的前
项和;
(3)若对任意
,有
恒成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c441d153bb85e08d02f079496125f4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8b68d90e55b00b6662a23f851cca89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bd8c5d3cc62cb0d57249d00a585fed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
4 . 如果
为各项都大于零且不相等的等差数列,则下列选项一定成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec5a9a9ab5b025383caf59ae0852dcb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
5 . 已知等差数列
满足
,
,数列
满足
.且有
.记
的前n项和为
.
(1)求数列
的通项公式;
(2)若数列
,求
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d194ba78838168b0e2dd321063d807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d84ee688592caf22e84910db79e7d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bed30336977adc258e3b8c23ad5fdf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0914c295f572c98dd043d4f84268934.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9221c0c92a526f65533cdc5400767af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
解题方法
6 . 数列
满足
,
,当
时,
,当
时,
,
,则当
时,m的最小值为 __________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12512ece96c59b86d189818f1e5310fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d26a0d1d970ebd1d91de7a2595eb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0cc8323f233d943d7e4acc6a8c8615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50e8dba0e417c39ee9735d3ae264331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2fbc5238724ee8778fdaf6989a09db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcde7189db381533bc4d0e4d24e4dce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b0746a010e029b5aa3f1d72dba5e82.png)
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解题方法
7 . 已知等差数列
的前
项和为
,
且
,数列
满足
,设
.
(1)求
的通项公式,并证明:
;
(2)设
,求数列
的前
项和
.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df84d425e294d81cc36912dab4656af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb14da5d8ba603dbb53af344a9fd84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e3a1d52cf4a1abcb8da0ecc01c3867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6fc93e6615bf4c1a2115d318aff007.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd24f1d24e712436bb64c950c7e11ad8.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817c2cae1c70dfe804155469ede46b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272b44a71d0bec02b3c4f3f05304f942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15520cf5be7c2685975aac51bc99ac4f.png)
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2024-04-28更新
|
684次组卷
|
3卷引用:山东省齐鲁名校联盟2023-2024学年高三第七次联考数学试题
名校
8 . 已知等差数列
的前
项和为
,
,
,则
( )
![](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/09f6418de1b3f59f27649f4c9d18404b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a4487df151b79412814f5f90e5767c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-08更新
|
488次组卷
|
2卷引用:重庆市第十一中学校2023-2024学年高三第九次质量检测数学试题
名校
9 . 若将
这
个整数中能被
整除余
且被
除余
的数按由小到大的顺序排成一列,则此数列的项数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee3762cc8c0d3fe791f6a568846d2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e946baf1316ac1f219398ecedadf6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知等差数列
中,
,则数列前9项和
最大值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e572a65f80ea5b548b6f72b1110a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05201ef79a5d5904f492845396fb5470.png)
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