名校
解题方法
1 . 已知等比数列
中,
,
.
(
)若
为等差数列,且满足
,
,求数列
的通项公式.
(
)若数列
满足
,求数列
的前
项和
.
![](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/d4d72bf4b4a4abd3e6590a851cca8cd0.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b17cdce5574808f10b6ea60894844e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fba49b245d97a8517cf0fb097689dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83de9a45d9b680da8835bac1fee9c9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2016-12-03更新
|
1248次组卷
|
6卷引用:2014-2015学年辽宁省朝阳区三校高二下学期第一次段测理科数学试卷
2010·辽宁沈阳·一模
名校
解题方法
2 . 已知数列
的前
项和
,则数列
( )
![](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/112712d9bfd58f18bfb58ba25f32b1a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.一定是等差数列 |
B.一定是等比数列 |
C.或者是等差数列,或者是等比数列 |
D.既不可能是等差数列,也不可能是等比数列 |
您最近一年使用:0次
2019-01-30更新
|
983次组卷
|
10卷引用:辽宁省沈阳第十中学2010届高三高考模拟考试数学试题(理科)
(已下线)辽宁省沈阳第十中学2010届高三高考模拟考试数学试题(理科)(已下线)2015届四川省成都外国语学校高三10月月考理科数学试卷2014年湘教版必修四 9.4分期付款问题中的有关计算练习卷2015-2016学年陕西省西安市第七十中学高二10月月考理科数学试卷2015-2016学年河南省许昌市四校高二上学期第三次联考理科数学试卷2015-2016学年河南省许昌市四校高二上学期第三次联考文科数学试卷新疆克拉玛依市北师大克拉玛依附属中学2018-2019学年高一下学期期末考试数学试题上海市莘庄中学等四校2015-2016学年高二上学期11月联考数学试题山西省阳泉市2018-2019学年高一下学期期末数学试题湖北省咸宁市鄂南高级中学2022-2023学年高二下学期阶段性检测(9)数学试题
3 . 已知数列
的前
项和
(
),数列
的前
项和
(
).
(1)求数列
的前
项和;
(2)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/57c599e7cec6d192fb73218e7882ceca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d471892beedafdb046a89e797442a878.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/003ba05ac35a6ea82fbe28247f39d2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d471892beedafdb046a89e797442a878.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfb8091a44e1edbc4dc5274a57cbd0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2016-12-04更新
|
699次组卷
|
4卷引用:2016届辽宁省大连市二十中高三10月月考理科数学试卷
13-14高二上·辽宁·阶段练习
名校
4 . 等比数列前n项和为54,前2n项和为60,则前3n项和为
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-02更新
|
1047次组卷
|
3卷引用:2013-2014学年辽宁实验中学分校高二上学期阶段性测试理科数学试卷
(已下线)2013-2014学年辽宁实验中学分校高二上学期阶段性测试理科数学试卷甘肃省武威第十八中学2017-2018学年人教A版高中数学必修五2.5.2数列求和同步练习江苏省扬州市高邮中学2020-2021学年高二上学期9月月考数学试题
5 . 已知数列
的各项均为整数,
,前12项依次成等差数列,从第11项起依次成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9625169eb5cc428a2d47a823780647.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418211967cfd60a02fe2bcfe7f2b03be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9625169eb5cc428a2d47a823780647.png)
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2018-07-27更新
|
240次组卷
|
5卷引用:【全国市级联考】辽宁省葫芦岛市2018届高三第二次模拟考试数学(文)试题
【全国市级联考】辽宁省葫芦岛市2018届高三第二次模拟考试数学(文)试题(已下线)2018年高考数学母题题源系列【浙江专版】专题十 等差数列、等比数列及数列的求和(已下线)2018年10月1日 《每日一题》一轮复习【文】-等差数列与等比数列的综合应用(2)(已下线)2019年9月30日《每日一题》2020年高考文科一轮复习—— 等差数列与等比数列的综合应用(2)(已下线)狂刷26 数列的综合应用-学易试题君之小题狂刷2020年高考数学(理)
2012·辽宁·一模
名校
解题方法
6 . 已知
为等比数列,
,
为等差数列
的前
项和,
,
.
求
和
的通项公式;
设
,求
.
![](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/2d7a31dc984efe9e6eb1aa093d86b5a7.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/4995fa0403e013d888c0935ebfe15024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5032706dd285c22e149c675da465d9ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](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/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7027d2a8b32f143fc93099bd9a48b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
7 . 已知等差数列{an}中,a2=5,S5=40.等比数列{bn}中,b1=3,b4=81,
(1)求{an}和{bn}的通项公式
(2)令cn=an•bn,求数列{cn}的前n项和Tn.
您最近一年使用:0次
2017-06-29更新
|
703次组卷
|
2卷引用:辽宁省实验中学2018届高三上学期期中考试数学(理)试题
名校
8 . 若等比数列
满足
,则其公比为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7ca0d6044982af40f6ae535b8ef5d3.png)
您最近一年使用:0次
9 . 设等比数列
的前n项和为
,已知
,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881eabb3eea4a9a9c8611a9910dbf9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5163674d46f04dac93f3081742b46d37.png)
A.0 | B.1 |
C.2 | D.3 |
您最近一年使用:0次
名校
解题方法
10 . 下列命题中:
①
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60775575f4aa98407260a240a0a75ec.png)
②数列
的前
项和
,则数列
是等差数列.
③锐角三角形的三边长分别为3,4,
,则
的取值范围是
.
④若
,则
是等比数列
真命题的序号是______________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60775575f4aa98407260a240a0a75ec.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://img.xkw.com/dksih/QBM/2017/11/20/1821208024530944/1822802961588224/STEM/59c093a2ff3d4975bbc4f6826a371fda.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5df4d666ed956941509cae1ed53f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
③锐角三角形的三边长分别为3,4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41f5767cf892d9a5f9215abcc552997.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e44407c862e2fe10d79c22a16261db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
真命题的序号是
您最近一年使用:0次
2017-11-22更新
|
470次组卷
|
2卷引用:辽宁省普兰店市第一中学2018-2019学年高二上学期期中考试数学试题