1 . 已知数列
其中
且点
在函数
的图像上![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f0ca5f6abab8028f79ad63f0c9a8e9.png)
(1)证明:数列
是等比数列,并求数列
的通项;
(2)记Tn为数列
的前n项积,Sn为数列
的前n项和,
,试比较Sn与
大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d672e89f1372b81c93573ae2a9baac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed9cd5befb05851eecbf716dc19750c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44042d110ad8bf676c2785c2b1f9a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3dab33a3665fa93bbd55f1fac6a645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f0ca5f6abab8028f79ad63f0c9a8e9.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219e26250f9ee16d38028d7c8c856318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)记Tn为数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597299058af94d8529b7ddd8c796c338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145574514cfc64893b93469ee49a7dd3.png)
您最近一年使用:0次
名校
解题方法
2 . 数列
是等比数列,公比大于
,前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
,
是等差数列,已知
,
,
,
.
(1)求数列
的通项公式
,
;
(2)设
的前
项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
,
(ⅰ)求
;
(ⅱ)若
,证明
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.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/28d82e4c2294efbd33e1b268e9a0cec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b840f977d70d2c0393528b91661c6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb0ae3ee83a722a6ea7774db46661c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d462a9d1eeb119638c72761db74d1690.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.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/28d82e4c2294efbd33e1b268e9a0cec5.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2711fcd2e88272be88e0423eec96928.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/297e437499bcb77a9c5ae6400d6e47cb.png)
您最近一年使用:0次
2020-03-19更新
|
1286次组卷
|
5卷引用:2019届浙江省杭州市学军中学高三下学期5月模拟考试数学试题
2020高二·浙江·专题练习
3 . 已知数列
满足
,数列
是公比为3的等比数列.
(1)求数列
的通项公式;
(2)当
时,证明:
;
(3)设数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774872ffec6c34cadeb450cfefdb11e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164e77845f2fc27175b7ecc1acc4cf6.png)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.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/105de1b20942840a12712c6795a05e1b.png)
您最近一年使用:0次
4 . 已知数列
的前
项和为
,且
.
(1)证明
是等比数列,并求
的通项公式;
(2)求
;
(3)设
,若
对
恒成立,求实数
的取值范围.
![](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/9a774c31c0a6b4bd6548f3b9d7036c73.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf3da897eb73b729f66bb0d700775c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02dc141d4d2243c055fb73712b0d4eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288a18c9690c22a70c25c0777e26ae82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-05-17更新
|
1231次组卷
|
2卷引用:【校级联考】浙江省湖州市高中联盟2017-2018学年高一下学期期中联考数学试题
解题方法
5 . 设数列
的前
项和为
,已知
,
,
.,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c75ad000fc4811c6dbd25e8e87792e.png)
(1)求证:数列
是等比数列;
(2)若数列
是单调递增数列,求实数
的取值范围.
![](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/21d34e3d9d8b5ae73bf938c7c6e70a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/379dde3931f7239fad2adf67345a1a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c75ad000fc4811c6dbd25e8e87792e.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
真题
6 . 在数列
中, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31488e1c84937581a83cbf365c2edfc2.png)
(1)若
求数列
的通项公式;
(2)若
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31488e1c84937581a83cbf365c2edfc2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4628c7b7e06ee684551a5e0b59506df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbc20506060ce6566d504147b7a9de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e76e00f863062971b1d26dccc8b5214.png)
您最近一年使用:0次
2016-12-03更新
|
2784次组卷
|
8卷引用:专题08 数列的通项、求和及综合应用 第一篇 热点、难点突破篇(练)-2021年高考数学二轮复习讲练测(浙江专用))
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