名校
1 . 设数列
的前
项和为
,已知
,
.
(1)求数列
的通项公式;
(2)若
,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/5b752334e1a2744cad632074c456dee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3f3aa38735766fad861dbf661e08b8.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4439d535480f4f204f2ae4fee95dae91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd85b79372dc6e596d465f738c3c300.png)
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2018-07-11更新
|
1981次组卷
|
5卷引用:【全国百强校】广东省汕头市金山中学2017-2018学年高一下学期期末考试数学(文)试题
【全国百强校】广东省汕头市金山中学2017-2018学年高一下学期期末考试数学(文)试题【全国百强校】广东省汕头市金山中学2017-2018学年高一下学期期末考试数学(理)试题(已下线)考点21 求和方法(第2课时)练习-2021年高考数学复习一轮复习笔记广西南宁市第三中学2020-2021学年高二12月月考数学(理)试题广西南宁市第三中学2020-2021学年高二12月月考数学(文)试题
2 . 已知数列
的首项
(a是常数),
(
).
(1)求
,
,
,并判断是否存在实数a使
成等差数列.若存在,求出
的通项公式;若不存在,说明理由;
(2)设
,
(
),
为数列
的前n项和,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606e55241a2e145d54849129b8ffd20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226abba1018d9eeae1cd379add2a2207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6995bff3a040b8ae6a4b2a289e67ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e2a1e5ab7c4484f7e48703829ed09d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c85bd8a6ac6110719b0cb7f1a78b3a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bc3df3bea2def2fd30b0f90d75ef32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea84f60c454c99bb66eef1223df3546d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07afcc64309b272b39b26a0d60b670b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cc55cc14fcb72777862710bbd5c22a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2018-07-11更新
|
593次组卷
|
2卷引用:【全国市级联考】湖北省黄冈市2018年春季高一期末考试文科数学试题
名校
3 . 定义函数
如下表,数列
满足
,
. 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7f05c44997fc7fd8da1726c63f6e63.png)
![](https://img.xkw.com/dksih/QBM/2018/10/15/2054100355350528/2055695622905856/STEM/51c851f4b08c463798693f3687c3ed12.png?resizew=526)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6aa8089b5d9b722aff679af3c4d289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7f05c44997fc7fd8da1726c63f6e63.png)
![](https://img.xkw.com/dksih/QBM/2018/10/15/2054100355350528/2055695622905856/STEM/51c851f4b08c463798693f3687c3ed12.png?resizew=526)
A.7042 | B.7058 | C.7063 | D.7262 |
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2018-07-09更新
|
288次组卷
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2卷引用:【全国市级联考】安徽省蚌埠市2017-2018学年高一下学期期末考试数学试题
名校
4 . 数列
的前
项和为
,若
, 则
![](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/a12945873f31f87827ac5c317376ee73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-07-03更新
|
1542次组卷
|
6卷引用:【全国百强校】河北省衡水中学2017-2018学年高一下学期期末模拟数学试题
5 . 已知数列
的前
项和为
,令
,记数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1d0eecf01e40db77f52401a91ed9f1.png)
![](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/f07ee1fd9cc31c46e4aa7500d074d958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cbe01b1519ed619264a84564c45531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1d0eecf01e40db77f52401a91ed9f1.png)
A.-2018 | B.2018 | C.-2017 | D.2017 |
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6 . 平面上画
条直线,且满足任何
条直线都相交,任何
条直线不共点,则这
条直线将平面分成__________ 个部分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2018-07-02更新
|
391次组卷
|
3卷引用:江苏省无锡市2017~2018学年第二学期高二数学(文)期末试卷
名校
解题方法
7 . 已知
为等差数列
的前
项和,且
.记
,其中
表示不超过
的最大整数,如
.
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18a28c9fb6ef74419e9dd154cd9a185.png)
(2)求数列
的前200项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/f0f453cb1438c6632bfded44015a6b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511bf0fe9bd2b7016e88adba24828dc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c97b2fda777eb1a17b8173bb184387e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18a28c9fb6ef74419e9dd154cd9a185.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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2018-04-24更新
|
658次组卷
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3卷引用:陕西省西安市铁一中学2022-2023学年高三上学期1月期末理科数学试题
名校
8 . 已知数列
中,
,
,记
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0375277e6dd33882e7f51e64d4650b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3590eccf2de24789fa7bcc25940bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efba990f1fca3fe00fb5e0a7fff0bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f88778a6d26ce8585da2bdd449e7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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2018-03-29更新
|
426次组卷
|
2卷引用:北京市首都师范大学附属中学2020-2021学年高二上学期期末考试数学试题
名校
9 . 已知数列
,
的前
项和分别为
,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abb42647bb48f0ed2087a354719204c.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf70b7634253be512bfda01d2cceee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbec2b89a224681c1a3bd16f0be1fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abb42647bb48f0ed2087a354719204c.png)
您最近一年使用:0次
2018-03-29更新
|
662次组卷
|
3卷引用:安徽省阜阳市太和中学2019-2020学年高二下学期期末数学(文)试题
10 . 数列
,
的前
项和分别为
,
,记
,若
,
,则数列
的前2018项和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2422db855bcb19c488df923255f8b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d4bdc5dff31caaa176bc22ce7ca7ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b782aa851587ba63bbca1f7ce5ed14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
A.2017 | B.2018 | C.![]() | D.![]() |
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