名校
解题方法
1 . 已知定义在
上的函数
满足
,且
,则下列说法正确的有( )
(1)若函数
,则函数
是奇函数;
(2)
;
(3)设函数
,则函数
的图象经过点
;
(4)设
,若数列
是等比数列,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c2c0c53a4a3cec33a469115e35ff53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684ad28f65278a86da53d2e8174affe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbd9b6a016adbec17f09dea6616af6c.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e6f029225779f875189ed5ee316758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40d31259e3d90d046b2ba32f9b00afd.png)
(4)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf1c417b7a4d17d437b3e7b1637ee4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3fd1e38d0e8a8063c4f13e1eade211.png)
A.(2)(3)(4) | B.(1)(3)(4) | C.(1)(3) | D.(1)(2)(3)(4) |
您最近一年使用:0次
2 . 已知数列
为递增的等差数列,
,且
成等比数列.数列
的前
项和为
,且满足
.
(1)求
,
的通项公式;
(2)令
,求
的前
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/e1a906b54faba205657952eba28a8a1d.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc93bdea0b85a84179354b598b6f74e.png)
(1)求
![](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/af500127f4fb52df7a08ba02f562efc6.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
3 . 若△ABC的内角A、B、C所对的边a、b、c成等比数列,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2faef719ca2fc6f4eca081c33f2e5d1c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-20更新
|
926次组卷
|
4卷引用:重庆市第一中学2018-2019学年高一下学期4月月考数学试题
重庆市第一中学2018-2019学年高一下学期4月月考数学试题重庆市万州第三中学2018-2019学年高一下学期期中数学试题(已下线)期末综合检测03-2020-2021学年高一数学下学期期末专项复习(苏教版2019必修第二册)(已下线)专题01 《数列》中的典型题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
名校
解题方法
4 . 已知数列
与
的前
项和分别为
与
,对任意
,
.
(1)若
,求
;
(2)若对任意
,都有
.
①当
时,求数列
的前
项和
;
②是否存在两个整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b056a90a2751f04ba5fff3dc5c1d0674.png)
,使
成等差数列?若存在,求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5fbadcd9f8504b2758b63ca8cd1fff.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4d39dc1cfda948aa11a4295ee6866a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deef5bc756c91fbc7a6ca5a6b5d744d7.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf360a484966fc0da0798a8be176b516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
②是否存在两个整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b056a90a2751f04ba5fff3dc5c1d0674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb2802a4b4bb30b8a6ddbb2b7b008fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745eafc6161d4c5a423be856dd73c130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ffae90a463d018fe4800e7ccd88a9a.png)
您最近一年使用:0次
5 . 设
数列
的前
项和,对任意
,都有
(
为常数).
(1)当
时,求
;
(2)当
时,
(ⅰ)求证:数列
是等差数列;
(ⅱ)若数列
为递增数列且
,设
,试问是否存在正整数
(其中
),使
成等比数列?若存在,求出所有满足条件的数组
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817274ce10b4ddc3d21623f049b7b7d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578018f15af2bf42cc28f0acd8f64009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5a6223f3806236030ca6de03c333ba.png)
(ⅰ)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(ⅱ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff5be413fb931e805ab22cac8c69b4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c4b529c16cb1e03d19187bacc61a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5bbf2770cc61ba381e4a5ee5e1a26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2fc41af0fa6ec283fcf3aa6c5102f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539fb1cfceab4becc870581145279d5.png)
您最近一年使用:0次
6 . 设等差数列
的公差d大于0,前n项的和为
.已知
=18,
,
,
成等比数列.
(1)求
的通项公式;
(2)若对任意的
,都有k(
+18)≥
恒成立,求实数k的取值范围;
(3)设
(
).若s,t
,s>t>1,且
,求s,t的值.
![](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/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9a270f97fbd194d89a2792b17a3e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62af5078117e52051d246dcb22af5163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1d269e56dfa9f7be5640918add4533.png)
您最近一年使用:0次
名校
7 . 已知数列
满足
,其中
.
(1)若数列前四项
,
,
,
依次成等差数列,求
,
的值;
(2)若
,且数列
为等比数列,求
的值;
(3)若
,且
是数列
的最小项,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfec8f3c954d83486d7846459f6d994d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6024fd3d71da587d8df3a0c28e7840.png)
(1)若数列前四项
![](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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b711804687540cdcfc5d2c2b42378b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194b8ab194c7d299d5c3e0f09ec18384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
您最近一年使用:0次
2020-01-20更新
|
358次组卷
|
3卷引用:2017届上海市六校联考高考模拟数学试题
2017届上海市六校联考高考模拟数学试题(已下线)卷02-备战2020年新高考数学自学检测黄金10卷-《2020年新高考政策解读与配套资源》上海市复旦大学附属中学2021届高三高考考前模拟训练数学试题
8 . 一个正实数,它的小数部分、整数部分及这个正实数依次成等比数列,则这个正实数是________
您最近一年使用:0次
名校
9 . 数列
是等差数列,
是等比数列,且满足
,
,则数列
的公比为________ .
![](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/e5de5b6b0c779570441182850d594832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9456aa55e6e0313c11ab70e057bde935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
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19-20高二上·北京西城·期中
名校
10 . 有穷数列
满足
,且
成等比数列. 若
,则满足条件的不同数列
的个数为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f56b6233ec28b50ec576d1062b7bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308bafeb34077dba1139f4a9a496259b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bade2ae00bc3ff7c52ab59c7be36fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f175e1b1a6afea552a048b65bc73d58e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
您最近一年使用:0次