1 . 已知数列
满足
,且
.
(1)证明:数列
为等比数列;
(2)记
,
是数列
前n项的和,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3369ae2337f8d6a049fd8e5a9f313f87.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13430afc40fc85c8bb5b69065f878acf.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d865bfb7827bb824fc429ea9adf32722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf4cea13f3c0a934a3be5a3d834774f.png)
您最近一年使用:0次
20-21高一上·全国·课后作业
名校
2 . 已知
,满足
.
(1)求证:
;
(2)现推广:把
的分子改为另一个大于1的正整数
,使
对任意
恒成立,试写出一个
,并证明之.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3aec1994a01be9e9335a62177131ee4.png)
(2)现推广:把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32df45c5ee591bb2b763deacb26110c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942932aac23ed64c833aacaae02e66bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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2021-04-18更新
|
303次组卷
|
4卷引用:江西省抚州市黎川县第一中学2020-2021学年高一下学期期末数学(理)试题
江西省抚州市黎川县第一中学2020-2021学年高一下学期期末数学(理)试题(已下线)3.2.2 基本不等式的应用(练习)-2020-2021学年上学期高一数学同步精品课堂(新教材苏教版必修第一册)(已下线)3.2 基本不等式(2)应用与难点(课堂培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)(已下线)2.2 (分层练)基本不等式-2021-2022学年高中数学必修第一册课时解读与训练(人教A版2019)
解题方法
3 . 已知数列
满足
.
(1)求
的通项公式;
(2)设
,记数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3312e4dd0bcc0526eabf94f59cd1835.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ad738dc3a9c27a05fbb0eb65d403d9.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/e8695875aded32578fcc9a86177b1ea6.png)
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4 . 数列
满足
,
,
,
.
(1)证明:数列
为等差数列,并求数列
的通项公式;
(2)求正整数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d667a1cbc19a151a5223ebd69d021d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd533a2645dbbdc0e52086ddcdc65da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545027eac895de229678d6644f5ee25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecfd552f63963ad88d97d335131e436.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92894107bb3dab385c5cbb2cfb27a710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff9dc01774072a70b084c35b01eb0c.png)
(2)求正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde46d2775e3ca1610036a71b30d3b85.png)
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2024-05-03更新
|
1541次组卷
|
4卷引用:江西省八所重点中学2024届高三下学期4月联考数学试卷
江西省八所重点中学2024届高三下学期4月联考数学试卷江西省八所重点中学2024届高三下学期4月联考数学试卷重庆市第一中学校2023-2024学年高二下学期期中考试数学试题(已下线)第一章数列章末综合检测卷(新题型)-【帮课堂】2023-2024学年高二数学同步学与练(北师大版2019选择性必修第二册)
名校
解题方法
5 . 已知数列
满足
.
(1)求数列
的通项公式;
(2)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/43ef37bc9e091611bf8cbfbaf13bba1c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800f863abe186fa2539f033ed03d8c51.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbf1030566a9bd54d283bf622caa2f3.png)
您最近一年使用:0次
2024-01-17更新
|
1983次组卷
|
7卷引用:江西省赣州市南康中学2024届高三上学期"七省联考"考前数学猜题卷(十)
江西省赣州市南康中学2024届高三上学期"七省联考"考前数学猜题卷(十)河北省沧州市泊头市第一中学等校2024届高三上学期12月省级联测考试数学试题河北省2024届高三上学期12月省级联测数学试题广东省深圳市深圳外国语学校2024届高三上学期元月阶段测试数学试题(已下线)考点12 数列中的不等关系 2024届高考数学考点总动员【练】河北省石家庄市新乐市第一中学等校2024届高三上学期省级联测数学试题(已下线)第4.4讲 数列求和综合应用-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)
2024·全国·模拟预测
名校
6 . 记
的内角
所对边分别为
,已知
.
(1)证明:
;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfbbd220feb8ae5ddedd7c34365910f.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428d8ba5d74557ac0660343e61b3bd8f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
您最近一年使用:0次
名校
7 . 已知公差不为0的等差数列
满足
,且
.
(1)求
的通项公式;
(2)记
是数列
的前
项和,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e186f59e4c84ac1600f710c5c0150f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea4144ba9435a99f0a71a0d526e5517.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13b0d771b3cfd3be92c629d10e90c8e.png)
您最近一年使用:0次
2024-06-03更新
|
379次组卷
|
2卷引用:江西省南昌市第十中学2023-2024学年高三下学期“三模”考试数学试题
8 . 在数列
中
,且满足
(
且
).
(1)证明:数列
为等比数列;
(2)求数列
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/1962ec26008093899dec76cbee62e5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d363b6982fee3bf1337d1542137a2f3d.png)
(2)求数列
![](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)
您最近一年使用:0次
2023-12-22更新
|
2696次组卷
|
5卷引用:江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(三)
江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(三)湖南省长沙市宁乡市2024届高三上学期11月调研考试数学试题(已下线)考点4 等比数列的定义与判断 2024届高考数学考点总动员【练】宁夏回族自治区银川市贺兰县第一中学2023-2024学年高二上学期期末复习数学试题(四)(已下线)热点5-2 等比数列的通项及前n项和(6题型+满分技巧+限时检测)
9 . 已知数列
中
,
,且满足
.设
,
.
(1)证明数列
是等比数列;
(2)求数列
的前n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/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05c930ca8259a066c75a6662a6412ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5653b60d16ec4e653518f0562680250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
解题方法
10 . 已知直线
.
(1)求证:直线过定点M;
(2)若直线
分别交x轴、
轴的正半轴于点A、B,O为坐标原点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440e55c8369cc0265c89066e6f24e947.png)
(1)求证:直线过定点M;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a99d2c4a23825f62aadcc40822b5eb.png)
您最近一年使用:0次
2023-10-28更新
|
168次组卷
|
2卷引用:江西省宜春市万载县赣西外国语学校2023-2024学年高二上学期期中数学试题(A卷)