名校
解题方法
1 . 数列
中,
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f42949920904b8be46312deb5a8584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18133667ed1f69110e2eee69a4ef10dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.10 | B.9 | C.11 | D.8 |
您最近一年使用:0次
2022-11-20更新
|
624次组卷
|
3卷引用:江西省上高二中2023届高三上学期第四次月考数学(理)试题
名校
解题方法
2 . 在数列
中,
,数列
的前
项和为
.
(1)证明:数列
是等比数列,并求数列
的通项公式;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445a1b3b548b246bbb67b33fd034821b.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/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d483eb4433fee05a5810a276433b1742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2022-06-22更新
|
368次组卷
|
3卷引用:江西省九江市柴桑区一中2020-2021学年高二上学期数学(理)期中试题
解题方法
3 . 已知数列
的前
项和为
,且
.
(1)证明:
为等比数列.
(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/da50e2ca8ac5634403345a58717bb539.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eeed71f97b988162e0c2d201c1bea0d.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)
您最近一年使用:0次
2022-04-26更新
|
1797次组卷
|
8卷引用:江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(文)试题
江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(文)试题江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(理)试题河南省新乡市2022届高三第三次模拟数学(文科)试题河北省秦皇岛市2022届高三二模数学试题内蒙古通辽市2022届高三4月模拟考试数学(理科)试题(已下线)2022年高考考前最后一课-数学(正式版)-2022年新高考数学终极押题卷内蒙古通辽市2022届高三4月模拟考试数学(文科)试题(已下线)江苏省泰州市2024届高三第二次调研测试数学试题变式题16-19
名校
解题方法
4 . 已知数列
的前n项和为
,且满足
,数列
的前n项和为
.
(1)求证:数列
为等比数列;
(2)试比较
与
的大小.
![](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/595042ec63fcf97b7d28dffe818b6fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d94406136605c5bc9cd9295d6c9fa.png)
(2)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b81a48dee1baf99faea42d11916c62c.png)
您最近一年使用:0次
2022-02-21更新
|
940次组卷
|
6卷引用:江西省宜春市铜鼓中学2021-2022学年高二下学期第一次月考实验班数学(理)试题
名校
5 . 已知数列
中,
,
(
).
(1)求证:
是等比数列,并求
的通项公式
;
(2)数列
满足
,求数列
的前
项和为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3e4e99f1bb2e11e3a240d2d74469f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5566978b9adb511ec5c0cf4313313bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f562ec93614852b395a602129602d9e.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)
您最近一年使用:0次
2017-12-09更新
|
1364次组卷
|
4卷引用:江西省新余市2021-2022学年高二上学期期末数学(文)试题