名校
解题方法
1 . 已知数列
是等比数列,
,且
,
,
成等差数列.
(1)求数列
的通项公式;
(2)若
,求数列
的前
项和
,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f7519e1b1dd927bc634eedafc88820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b32aee86109b777671cd62868db3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86e2e42b4aa93db9241103e7f61766c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3197707ce6ea0c947e8c806b31695f.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9928e46511e601913619a427ded84a3.png)
您最近一年使用:0次
2022-04-25更新
|
774次组卷
|
3卷引用:安徽省马鞍山市第二中学2022-2023学年高二下学期期中模拟测试(A)数学试题
名校
解题方法
2 . 已知数列
、
满足
,若数列
是等比数列,且
.
(1)求数列
、
的通项公式;
(2)令
,求
的前
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/220554e3dda9744d5f425855430cf715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ef42e0bce0479bee365e80700cc617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a65edbfaa6e68db4b62a19f7faef4b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1cad121e14d478e5678e9a3412148f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2022-04-14更新
|
1281次组卷
|
7卷引用:安徽省黄山市2022届高三下学期第二次质量检测文科数学试题
3 . 已知等比数列
的公比大于1,
,
.
(1)求
的通项公式;
(2)若
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7def23f30138e0b7c4c1e498d6903a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b0c9b657e5937ef250ce983c3e6121.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0783deda8b399da900d003ffcf824c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2022-08-16更新
|
532次组卷
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4卷引用:安徽省亳州市蒙城第一中学2023届高三下学期最后一卷(三模)数学试题
名校
解题方法
4 . 已知数列
为等比数列,公比
,
,
,
,
成等差数列,将数列
中的项按一定顺序排列成
,
,
,
,
,
,
,
,
,
,…的形式,记此数列为
,数列
的前n项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da13d38b5bfe409ad174de50a3faabe.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45482d31d1d7448c9f3922b4d2a55331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7755b0ec8df40da1e10c3567e441be7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b2667a6c91b720ca9b42d092c776cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/4da13d38b5bfe409ad174de50a3faabe.png)
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2022-03-29更新
|
261次组卷
|
3卷引用:安徽省示范高中皖北协作区2022届高三下学期3月联考理科数学试题
名校
解题方法
5 . 在等比数列
中,
,公比
,则
( )
![](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/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
A.24 | B.48 |
C.54 | D.66 |
您最近一年使用:0次
2022-03-27更新
|
670次组卷
|
4卷引用:安徽省滁州市九校2021-2022学年高二下学期3月月考数学试题
名校
解题方法
6 . 已知数列
是等比数列,且
,
.
(1)求数列
的通项公式;
(2)设
,求数列
的前n项和
,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8704715494fa5efdcac1ed529a0201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e5a94e4ce8e6bb2da8c80df0a2e8c9.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36925e53ab12172c7616b6d64b608b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d76c3eb0a07a827877d7a4dc306211.png)
您最近一年使用:0次
2022-03-20更新
|
4390次组卷
|
12卷引用:安徽省芜湖市无为襄安中学2022-2023学年高二下学期4月期中考试数学试题
安徽省芜湖市无为襄安中学2022-2023学年高二下学期4月期中考试数学试题河北省张家口市2022届高三第一次模拟数学试题广东省湛江市2022届高三一模数学试题广东省肇庆市2022届高三下学期第三次教学质量检测数学试题甘肃省武威市凉州区2022届高三下学期质量检测数学(文)试题(已下线)数学-2022年高考考前押题密卷(新高考Ⅰ卷)广东省佛山市南海艺术高级中学2022届高三下学期第三次大测数学试题(已下线)6.4 求和方法(精讲)陕西省咸阳中学2022-2023学年高二上学期期中理科数学试题山西省运城市稷山中学2023届高三上学期11月考(重组六)数学试题(已下线)专题05 数列 第三讲 数列与不等关系(分层练)(已下线)专题05 数列 第二讲 数列的求和(分层练)
名校
7 . 在正项等比数列
中,
是
的等差中项,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8298234685f91e500bfcd8d2856a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14877bf6d7297f02feff3468abf01f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
A.16 | B.27 | C.32 | D.54 |
您最近一年使用:0次
2022-03-15更新
|
854次组卷
|
6卷引用:安徽省“皖东县中联盟”2021-2022学年高三上学期期末联考文科数学试题
名校
解题方法
8 . 已知
为等比数列,
为其前
项和,若
,
,则
( )
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5728734a851634620b44bda555d0816f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a454ef000c67d0e0aa254fe0157440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-10更新
|
1353次组卷
|
10卷引用:安徽省六安第一中学东校区2021-2022学年高二下学期学科核心素养开学考试数学试题
安徽省六安第一中学东校区2021-2022学年高二下学期学科核心素养开学考试数学试题北京西城区2022届高三上学期期末数学试题(已下线)解密11 数列的前n项和及其应用(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(全国通用)(已下线)4.2 等比数列(精讲)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)北京市第十四中学20223届高三上学期10月月考数学试题宁夏石嘴山市第三中学2023届高三上学期期末考试数学(理)试题北京一零一中学2023届高三下学期开学考数学试题北京理工大学附属中学2022-2023学年高二下学期3月月考数学试题新疆乌鲁木齐第八中学2022-2023学年高二下学期期中考试数学(文)试题北京市东城区2023届高三综合练习数学试题
9 . 已知等比数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91ce5faf26829c7a4909006eeb9a7b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
A.![]() | B.9 | C.![]() | D.15 |
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2022-03-05更新
|
390次组卷
|
3卷引用:安徽省皖南地区2021-2022学年高二下学期开学调研考试数学试题
名校
10 . 公园中有一块如图所示的五边形荒地,公园管理部门计划在该荒地种植126棵观赏树,若1至6六个区域种植的观赏树棵数成等比数列,且前3个区域共种植14棵,则第5个区域种植的观赏树棵数为( )
![](https://img.xkw.com/dksih/QBM/2022/2/23/2922734397734912/2926951012130816/STEM/529cc868-f01a-4fbf-a4e3-37f0a21d4a85.png?resizew=152)
![](https://img.xkw.com/dksih/QBM/2022/2/23/2922734397734912/2926951012130816/STEM/529cc868-f01a-4fbf-a4e3-37f0a21d4a85.png?resizew=152)
A.16 | B.28 | C.32 | D.64 |
您最近一年使用:0次
2022-03-04更新
|
599次组卷
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9卷引用:百师联盟2022届高三下学期2月开年摸底联考全国卷1理科数学试题
百师联盟2022届高三下学期2月开年摸底联考全国卷1理科数学试题百师联盟2022届高三下学期2月开年摸底联考全国卷1文科数学试题安徽省滁州市定远县育才学校2021-2022学年高二分层班下学期期中考试数学(文)试题山西省吕梁市2022届高三下学期开年摸底联考(全国卷1)数学(理)试题山西省吕梁市2022届高三下学期开年摸底联考(全国卷1)数学(文)试题广东省广州市育才中学2021-2022学年高二下学期期中数学试题江苏省连云港市2022-2023学年高二上学期期末调研数学试题(6)山西省晋城市泽州县晋城一中教育集团南岭爱物学校2022-2023学年高二上学期第五次调研考试数学试题新疆乌鲁木齐市第八中学2022-2023学年高二下学期第一次质量检测(开学摸底)数学试题