1 . 已知等差数列
满足
,
,公比不为
的等比数列
满足
,
.
(1)求
与
的通项公式;
(2)设
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d7127a0c69478f357f84de6241ae43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b7b8f45c4af23b598b1bfee01db679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f152df374ac70a9b006253fb89e56fb8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac07953530e3c248b3438fb200fb1661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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7卷引用:新疆乌鲁木齐市第六十一中学2022-2023学年高二下学期期中考试数学试题
新疆乌鲁木齐市第六十一中学2022-2023学年高二下学期期中考试数学试题甘肃省兰州市教育局第四片区联考2023-2024学年高二上学期期中考试数学试题新疆乌鲁木齐市第十九中学2023-2024学年高二下学期第二次月考数学试题(已下线)第4章 数列 章末题型归纳总结(2)(已下线)4.3等比数列(3)(已下线)第05讲 4.3.2等比数列的前n项和公式(7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第二册)(已下线)第07讲 拓展二:数列求和(10类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第二册)
名校
2 . 已知
是等比数列
的前n项和,若存在
,满足
,
,则数列
的公比为( )
![](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/4f6b18b109a656b62fb173680ae99ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8adc5b5a63e0ff8470ab822d924a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce06f056f653a00fc39a9177806ffd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.0 | B.2 | C.-3 | D.3 |
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3卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期11月月考数学试题
解题方法
3 . 已知非零数列
的前n项和为
,且满足
,其中p为常数,且
.
(1)证明:数列
是等比数列;
(2)若
,
,数列
的前n项和为
,证明:
.
![](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/b7a48c92685da35053d50b643b0ee77f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea7e0ac16c02bd211e9926c44e50334.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acff98078cdd32804d8f1c4efbe2ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e33761fb26db9a36416a503fa7f0ed7.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/f9928e46511e601913619a427ded84a3.png)
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名校
4 . 已知等比数列
的前n项和为
,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/f6c705f2dbd437d2a9bad08858c0ab62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9dc1b47802a58617d249431397737a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:新疆乌鲁木齐市第六十一中学2024届高三上学期12月月考数学试题
解题方法
5 . 若数列
的前
项和
满足
.
(1)证明:数列
是等比数列;
(2)设
,记数列
的前
项和为
,证明:
.
![](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/88d60948fb65e86c170ede4c1cd9fc4f.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6e11191eaa0cb19ad39175563e40e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0441e285d990afd18061376145503267.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/c02e80983b88cdf6b540502816c87d13.png)
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5卷引用:新疆乌鲁木齐地区2023届高三二模数学(理)试题
新疆乌鲁木齐地区2023届高三二模数学(理)试题新疆维吾尔自治区乌鲁木齐市2023届高三第二次质量监测数学(理)试题(已下线)专题05 数列(已下线)专题04数列求和及综合应用(已下线)专题11数列(解答题)
解题方法
6 . 在等比数列
中,
,且
成等差数列.
(1)求数列
的通项公式;
(2)设
,求数列
的前n项和
.
![](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/7e20614484af7f26b71a9ee82935bea0.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64a556380742743746b028dcb11dcf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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3卷引用:新疆乌鲁木齐地区2023届高三二模数学(文)试题
名校
解题方法
7 . 中国古代数学著作《算法统宗》中有这样一个问题:“三百七十八里关,初行健步不为难,次日脚痛减一半,六朝才得至其关,要见次日行里数,请公仔细算相还.”其意思是:有一个人走378里路,第一天健步行走,从第二天起脚痛,每天走的路程为前一天的一半,走了6天后到达目的地,请问第四天走了( )
A.24里 | B.48里 | C.96里 | D.192里 |
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4卷引用:新疆维吾尔自治区乌鲁木齐市第97中学2024届高三上学期12月月考数学试题
新疆维吾尔自治区乌鲁木齐市第97中学2024届高三上学期12月月考数学试题江苏省苏州市常熟中学2023-2024学年高二上学期十月阶段性学业水平调研数学试题(已下线)模块三 专题3 小题满分挑战练(3) 期末终极研习室(高二人教A版)福建省宁德市2022-2023学年高二上学期期中数学试题(B卷)
8 . 设等比数列
的前
项和为
,若
,且
成等差数列,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/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf1ae1ee45eb32d0bbbd152bce34899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
A.63 | B.31 | C.-63 | D.-31 |
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5卷引用:新疆乌鲁木齐市第六十一中学2022-2023学年高二下学期期中考试数学试题
名校
9 . 等比数列
中,已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25fc6e4698a74a39097e891812c976ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d84ee688592caf22e84910db79e7d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08a8c9baca410ef1464caf7f522aa4a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用: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
10 . 已知数列
是等比数列,且
,
.
(1)求
的通项公式;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd08dea792140965eccea3442635d328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f21c9c920ec8bc13650e9b2f455290.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
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