1 . 若数列
满足:对任意
,均有
成立,且
都是等比数列,其公比分别为
,若
,且
对任意
恒成立,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb2db37e079b735acc41ea3035139e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d811cef9a59f04751757e014013c88f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196aaacaf2b48dc0c76ac76298c2cf0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5733d06af66e31b6242c6f5ac2a272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad7068aac25acfea58e5660930a873f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fbf554e4bb22c47174b5ad0d03fe97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
您最近一年使用:0次
2 . 设
均为正实数,且
则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e13e9f5671f9b8cee5dcf973e0fa738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02260221ca9b7453f74867feb55c488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fda3a11661535623452b8f8bec98c6.png)
您最近一年使用:0次
解题方法
3 . 将数列
与
的公共项从小到大排列得到数列
,则其通项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643515c34fb353fef8f61b2f5a940b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43bec47d45b45c2db9a4055f839a8104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e38321617930485aed7b188a22f464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
4 . 已知两个无穷数列
,
分别满足
,
,其中
,设数列
,
的前n项和分别为
,
.若数列
满足:存在唯一的正整数
,使得
,称数列
为“k坠点数列”.若数列
为“p坠点数列”,数列
为“q坠点数列”,若
,则m的最大值为________ .
![](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/d4989a7c21d25be403b53db197c8ff77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c7fa4d79dd6982e6a9a2c5bb10b707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcb582191f3c4690817af7fe4b5b28b.png)
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0505b3b01eabf49fa1cd907fe92deb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0f5c18b7f1fbb05d8d7ab85eeb728c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](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/d45a4a72bdca2a17b689b34387e816d8.png)
您最近一年使用:0次
2020高三·全国·专题练习
5 . 数列
满足
或
,则数列
是周期数列且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23cb763b3517a6204a9e9eb1d6163553.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4766addd01a866373b55383a8c4636fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b27cd2bf295cf391187d40a8b156517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23cb763b3517a6204a9e9eb1d6163553.png)
您最近一年使用:0次
名校
解题方法
6 . 对于正整数n,设
是关于x的方程
的实数根.记
,其中
表示不超过x的最大整数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
____________ ;设数列
的前n项和为
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469a49d15c634c79d8e36cb6edaff624.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2147cdb7c47327b9a8e3274df089aec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c84fb3e536f74961243c6b89ddcee09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
![](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/469a49d15c634c79d8e36cb6edaff624.png)
您最近一年使用:0次
2020-08-12更新
|
1974次组卷
|
6卷引用:湖北省七市州教科研协作体2020届高三下学期5月联合考试数学(理)试题
名校
7 .
为等差数列
的前n项和,且
,
,记
,其中
表示不超过x的最大整数,如
,
,则数列
的前100项和为________ .
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d7c9bb2b4b0ef3bbb0ff448cf5ca33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a70aa10c5078d2ed248500fd13cb752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6622931e908716637bfbb92d72e8c3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafa3c4b098a68286ecec456b02c51ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2020-08-10更新
|
283次组卷
|
2卷引用:安徽省高中教科研联盟2019-2020学年高二下学期期末联考文科数学试题
8 . 已知数列
满足
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcc3ac8aeacef8e983bb96c646f771d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbc0ad18cbb1af4ecc272f425db5de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5112a306ffec697a465ba908df021408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcc3ac8aeacef8e983bb96c646f771d.png)
您最近一年使用:0次
名校
9 . 设
,数列{xn}满足
.若1≤x7≤2,则x8的取值范围为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6dc6b2701de8807efd7cc22e1f21af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68513f125e6766a039eab3ab01cce834.png)
您最近一年使用:0次
10 . 设
,定义
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48a84bbc68327f13df6af3e8083db9a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f3f3db1411700e117d64bbf38a8737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c3ef724cecaca2c47141a7452bad48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3077d758b9ea826fcfbdb20312811aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48a84bbc68327f13df6af3e8083db9a.png)
您最近一年使用:0次