21-22高二·江苏·课后作业
解题方法
1 . 在等比数列
中,已知
,
.求:
(1)数列
的通项公式;
(2)数列
的前5项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0748c346ed88f98e424de8edf278325.png)
(1)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27182444d3da4003680f07ec299087c.png)
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2022-03-02更新
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2962次组卷
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5卷引用:本章测试4
(已下线)本章测试4湖北省武汉情智学校2021-2022学年高二下学期3月质量检测数学试题(已下线)第03讲 等比数列及其前n项和 (高频考点—精练)苏教版(2019)选择性必修第一册课本习题第4章本章测试(已下线)第4.3.2讲 等比数列的前n项和公式(第1课时)-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)
21-22高二·江苏·课后作业
名校
解题方法
2 . 如果数列
的前n项和
满足:
,那么
的值为( )
![](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/57c599e7cec6d192fb73218e7882ceca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
A.18 | B.19 | C.20 | D.21 |
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2022-03-02更新
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1042次组卷
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5卷引用:本章测试4
(已下线)本章测试4江苏省镇江市扬中高级中学2022-2023学年高二下学期第二次阶段测试数学试题河南省鹤壁市高中2022-2023学年高二上学期10月居家测试数学(平行班)试题(已下线)4.1数列(第2课时)(分层作业)(1)苏教版(2019)选择性必修第一册课本习题第4章本章测试
21-22高二·江苏·课后作业
解题方法
3 . 在等比数列{an}中,
(1)已知a1=1,公比q=-2,求前8项和S8;
(2)已知a1=-
, a4=96,求前4项和S4;
(3)已知公比q=
,前5项和S5=
,求a1, a5.
(1)已知a1=1,公比q=-2,求前8项和S8;
(2)已知a1=-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(3)已知公比q=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9918262fe49da9a1031ea451973cb5c0.png)
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4 . 判断下列数列是否为等比数列:
(1)9,0.9,0.09,0.009;
(2)
,
,
,
;
(3)
,
,
,
;
(4)
,
,
,
.
(1)9,0.9,0.09,0.009;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b57c4a905b766f8755d01b28d22a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993908fc9c1baaf8774ba080107c23d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd7d7624d5efbb189205bd3a4a13e3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bac900bd09df30926bbf18dcf94628a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5498db3231db49529b93fdf13433298a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f5ca7640f5202cc27dd03190d101e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6e41b8e683c5d3b71c867b582524a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a9b9cada684621f0b080058a3582d3.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef25f1fa9539e95e763cd0ef4bf68782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b4d1868e26d04a2bd6b30a07d514c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3e49942ad60434e5ea393f722be9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425c4c772403a5d629255d864fe9abf4.png)
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21-22高二·江苏·课后作业
5 . 三个数成等比数列,它们的积等于8,它们的和等于-3,求这三个数.
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21-22高二·江苏·课后作业
解题方法
6 . 在等比数列
中,
(1)已知
,
,求
;
(2)已知
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0748c346ed88f98e424de8edf278325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c64fbabb635d31e2bec91949bbf6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9bd0eb8aeaf86ee27f809b60699c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47319b45ca35dac651a36deff75ea76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
您最近一年使用:0次
2022-02-28更新
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777次组卷
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4卷引用:4.3.2 等比数列的通项公式
(已下线)4.3.2 等比数列的通项公式山西省太原市英才学校高中部2022-2023学年高二上学期12月月考数学试题苏教版(2019)选择性必修第一册课本习题 习题4.3(1)(已下线)4.3.1等比数列的概念(第2课时)(分层作业)(4种题型)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第二册)
21-22高二·江苏·课后作业
解题方法
7 . 在等比数列
中,
(1)已知
,
,求
;
(2)已知
,
,求
和q;
(3)已知
,
,求
;
(4)已知
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157fc73999f07d08e7814c83f8aa4783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0165ec0b56b8ed7932a7fb583b7677cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e449a6d9e76e0497bf2672740f801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c5c4ac959eb2c4b74afabc9cdd3a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6c2e49c873187b12e90a7b4d5d906b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ba58bbd886450561d3104017aada2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b6e1c7a7b39dc472a68cbea4bc994d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2955370028ae5a872079c12bfedc3b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
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21-22高二·江苏·课后作业
8 . 已知数列
是等比数列.
(1)如果
,
,求公比
和
;
(2)如果
,
,求公比
和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51c55e7bfb89ad0113afaf43834438c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7def23f30138e0b7c4c1e498d6903a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
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21-22高二·江苏·课后作业
解题方法
9 . 在等差数列
中,
(1)已知
,
,求
和公差d;
(2)已知
,
,求
;
(3)已知
,
,求
;
(4)已知
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c784ffe7c810da7e51152e578eeeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53572b203bf36a9461dc9a744367a4d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0748c346ed88f98e424de8edf278325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec86e0dce142fe6fb91d2ab687a3b0e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e76d1d8e50dda4d50229a8a20c57e58.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6278d3cc0086c7aab6ac20712c7d0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96d4cc6af7cfdb3d3a377f8e24b59ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71e56f374084c51b0b761c14d750dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0d29f34218cd60cc6e9ce4dcd13925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
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4卷引用:4.2.2 等差数列的通项公式
(已下线)4.2.2 等差数列的通项公式湖北省武汉情智学校2021-2022学年高二下学期3月质量检测数学试题(已下线)4.2.1.1 等差数列的概念(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)苏教版(2019)选择性必修第一册课本习题 习题4.2(1)
21-22高二·江苏·课后作业
10 . 求下列等差数列的第
项:
(1)2,6,10,…
(2)13,9,5,…
(3)
,
,
,…
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)2,6,10,…
(2)13,9,5,…
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
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