1 . 已知数列
和
中,数列
的前
项和为
若点
在函数
的图象上,点
在函数
的图象上.设数列![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/8af72bfab3b347f8af8bcb6ddc4cd0cd.png)
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)求数列
的前
项和
;
(Ⅲ)求数列
的最大值.
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/70c4be8fb61e4e2eb0c29365bdd28075.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/fd395a1e04f84a94ace58c3b9fc763ba.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/70c4be8fb61e4e2eb0c29365bdd28075.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/35f3d716595842c4b381cac036e04ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5a07c571f5707c6de3e5cf426d5b59.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/c6e58fbce23a41569b7c4bfee5431e38.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/3f874ff8fa354a9ba5e6fd436a04eff7.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/cb73d3b1341641f192ae86b1e25d842e.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/e0b227d3102b429ba41818e175b9672d.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/8af72bfab3b347f8af8bcb6ddc4cd0cd.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/9988de96b57647b18b3115c6ae6f5cff.png)
(Ⅰ)求数列
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/70c4be8fb61e4e2eb0c29365bdd28075.png)
(Ⅱ)求数列
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/9d06a8e638bf4564b12f4334f69a0796.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/35f3d716595842c4b381cac036e04ac2.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/ad3726eeff62439ca110b034c696e502.png)
(Ⅲ)求数列
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/9d06a8e638bf4564b12f4334f69a0796.png)
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2 . 数列{an}满足a1=1,a2=2,an+2=2an+1-an+2.
(1)设bn=an+1-an,证明{bn}是等差数列;
(2)求{an}的通项公式.
(1)设bn=an+1-an,证明{bn}是等差数列;
(2)求{an}的通项公式.
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3 . 已知
是递增的等差数列,
是方程
的根.
(1)求
的通项公式;
(2)求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://img.xkw.com/dksih/QBM/2015/7/23/1572192923361280/1572192928768000/STEM/4210fc836d2d403c98329e6e325f893d.png)
![](https://img.xkw.com/dksih/QBM/2015/7/23/1572192923361280/1572192928768000/STEM/8079357a67d9426c8b9e2f47ce9b8f3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46456ad4b803bd94aecd382e52928011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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名校
4 . 数列{
}满足
,则{
}的前100项和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58278d49ca65d95680adf92cbda87159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
A.3690 | B.5050 | C.1845 | D.1830 |
您最近一年使用:0次
2016-12-03更新
|
1269次组卷
|
2卷引用:2014-2015学年重庆市万州二中高一4月月考理科数学试卷
5 . 已知函数
在区间[-1,2]上的最大值是最小值的8倍.
(Ⅰ)求a的值;
(Ⅱ)当a>1时,解不等式
.
![](https://img.xkw.com/dksih/QBM/2015/4/7/1572065734008832/1572065739849728/STEM/3fe4d4cf5e2640aebe9220475e292935.png)
(Ⅰ)求a的值;
(Ⅱ)当a>1时,解不等式
![](https://img.xkw.com/dksih/QBM/2015/4/7/1572065734008832/1572065739849728/STEM/19bcfdf140f546c9a2ba439c54386263.png)
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13-14高一下·重庆·阶段练习
6 . 将一个等差数列依次写成下表:
第1行:2
第2行:5 8 11
第3行:14 17 20 23 26
………………………………………………
第
行:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e843a95617ad24ea4e789a0cdc5912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c82be573157fd2c8068cb000505b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aec8aa05d77a638e99494af9dfc0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e338a2cd8381353173126753e2415.png)
………………![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2814549b2e9f30007ab2d811dd9adf9.png)
(其中
表示第
行中的第
个数)
那么第
行的数的和是_________________ .
第1行:2
第2行:5 8 11
第3行:14 17 20 23 26
………………………………………………
第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e843a95617ad24ea4e789a0cdc5912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c82be573157fd2c8068cb000505b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aec8aa05d77a638e99494af9dfc0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e338a2cd8381353173126753e2415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392546a6637cb8faf9f356f4739cd7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2814549b2e9f30007ab2d811dd9adf9.png)
(其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee641d39bc70aa40e611fcfc6b78f30b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
那么第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 已知
是公差不为零的等差数列,
,且
是
和
的等比中项,求:
(1)数列
的通项公式;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311d7218c587305d15e0d9306f5be4a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d630ee4a58a0bba5102f31bca2939b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8dc8c6dcfd181b8e2dbb8647483e3fd.png)
(1)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770985bc82a81c80de6558cf24e2a03a.png)
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13-14高一下·重庆·阶段练习
8 . 我们把一系列向量
排成一列,称为向量列,记作
,又设
,假设向量列
满足:
,
.
(1)证明数列
是等比数列;
(2)设
表示向量
间的夹角,若
,记
的前
项和为
,求
;
(3)设
是
上不恒为零的函数,且对任意的
,都有
,若
,
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ea0f78d54dcbad97508aa9f299cf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a38e5d6578eccec4d2da37de80b885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a64b44495b88b382a0011205a2b8e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a38e5d6578eccec4d2da37de80b885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1fa812a327b71fcb40938d70bdb9df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ed376a4e498b5f240f1640891d6eb4.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d16c067abe5852f5fe0ebd2a46b4c552.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ffa8be5a02790c6161c56b8e90db64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69802c9f53dea5bf9ec21b5a75f2b84e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b0645beb018473ca1f530e5682a404.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/9fa209ac86cd8c88e638cda47db5bfa2.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73254f32b6da29ecc32df2e9f87a4c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388c1c3c57e5d2c13a58dc45705276c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896df31f80127adbae738b3a014bd4e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9f5c2252c81339d1220e9b280ddf3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a55e4115c36490a40f83d15f066bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2014高三·全国·专题练习
名校
9 . 若
,
,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ac52d5bd44e1835e0185f8d86c842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
您最近一年使用:0次
2016-12-02更新
|
4961次组卷
|
18卷引用:重庆市铜梁一中等三校2023-2024学年高一上学期10月联考数学试题
重庆市铜梁一中等三校2023-2024学年高一上学期10月联考数学试题2015-2016学年江苏省泰州中学高一下第二次月考数学试卷浙江省湖州市安吉振民高级中学2023-2024学年高一上学期第一次月考数学试题(已下线)第09讲 基本不等式9种常见题型-【同步题型讲义】(人教A版2019必修第一册)(已下线)2014届高考数学总复习考点引领+技巧点拨第六章第4课时练习卷2015-2016学年江苏省射阳县二中高二上学期第一次学情调研数学试卷天津市实验中学2019届高三第六次阶段考数学(理)试题【全国百强校】天津市实验中学2019届高三第六次阶段考数学(文)试题(已下线)专题09 基本不等式的应用-《巅峰冲刺2020年高考之二轮专项提升》(江苏)2020届江苏省南通市西亭高级中学高三上学期第一次校内模拟测试数学(理)试题(已下线)专题13 基本不等式-2020年高考数学母题题源解密(天津专版)(已下线)第05讲 基本不等式及应用-2021届新课改地区高三数学一轮专题复习江苏省盐城市滨海县八滩中学2020届高三下学期仿真模拟考试(一)数学试题广东省深圳福田区红岭中学2021届高考二模数学试题(已下线)2021年高考数学押题预测卷(天津卷)02(已下线)专题05 盘点均值不等式求最值的七种配凑方法-1江苏省南通市海安高级中学2023-2024学年高三上学期阶段测试(一)数学试题(已下线)第一章 集合、常用逻辑用语与不等式 专题2 条件最值的求解
名校
10 . 已知数列
的前
项和为
且
,数列
满足
,
,其前9项和为63.
(1)求数列
和
的通项公式;
(2)令
,数列
的前
项和为
,若对任意正整数
,都有
,求
的
最小值.
![](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/ae734ad099abbb2f7efe7d7a6a4169fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da27af76af63ca4cfa21822aa79d6ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400a18cc22f2d9efc0de601767df207c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d9bd40057948c5e3eb23064a673284.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f08f40b213a0f82fc79577a1ffb667f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650951770112/1572650957848576/STEM/28f54a984c3e4464bfb1c78f9ce010d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65bb83b1daf4c79e6a10ec01a466425.png)
最小值.
您最近一年使用:0次
2016-05-26更新
|
783次组卷
|
2卷引用:2015-2016学年重庆市巴蜀中学高一下期中文科数学试卷