1 . 已知数列
为等比数列,函数
的导函数为
,
,若
,
的公比
,则当
的前
项乘积最小时,
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfc1cae6735684f490b50e37a2cf253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a587fb0ee137864d8ecd72274540af38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.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/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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2023-07-05更新
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3卷引用:江西省萍乡市稳派联考2022-2023学年高二下学期5月月考数学试题
2 . 在平面直角坐标系xOy中,A为坐标原点,
,点列P在圆
上,若对于
,存在数列
,
,使得
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b5c05d438fd55358a2642e62da8e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecf69901899bba130968c7a091790d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e416f0b8dcf6a2cfae7152ecff10f03.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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2023-02-23更新
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853次组卷
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4卷引用:专题05 数列在高中数学其他模块的应用(九大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
(已下线)专题05 数列在高中数学其他模块的应用(九大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)2023年普通高等学校招生全国统一考试数学模拟演练(二)重庆市2023届高三下学期3月月度质量检测数学试题(已下线)重难点突破01 数列的综合应用 (十三大题型)-2
3 . 已知
是正项等比数列中的连续三项,则公比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4ce889bfd0183bfd14314edca73e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
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名校
4 . 数列
的前
项和为
,则下列说法正确的是( )
![](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)
A.已知![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.设![]() ![]() ![]() ![]() ![]() |
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2023-01-04更新
|
951次组卷
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6卷引用:江苏省常州市第三中学2022-2023学年高二上学期期末数学试题
江苏省常州市第三中学2022-2023学年高二上学期期末数学试题山东省青岛市青岛第五十八中学2022-2023学年高二上学期期末数学试题辽宁省部分学校2022-2023学年高二下学期期中考试数学试题辽宁省第三十一中学2022-2023学年高二下学期期中数学试题(已下线)第四章 数列章末检测卷(二)-【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)湖北省襄阳市第三中学2022-2023学年高二上学期期末数学试题
解题方法
5 . 已知数列
是公比为
的等比数列,其前
项和为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.若数列![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() |
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解题方法
6 . 如图,已知抛物线
的焦点为
,点
是
轴上一定点,过
的直线交
与
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/cd69fb7a-d536-47e7-8328-6828da4292db.png?resizew=126)
(1)若过
的直线交抛物线于
,证明
纵坐标之积为定值;
(2)若直线
分别交抛物线
于另一点
,连接
交
轴于点
.证明:
成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a33a862879af06d123c7d73dd2d796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/cd69fb7a-d536-47e7-8328-6828da4292db.png?resizew=126)
(1)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f726eafc3e7ce9970115202f5122b964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13730ae9ebfa7b219d857e297fb617df.png)
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2022-01-25更新
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2卷引用:湖北省黄冈市2021~2022学年高二上学期期末数学试题
解题方法
7 . 对于以下四个选项,其中正确的为( )
A.![]() ![]() ![]() |
B.等轴双曲线![]() ![]() |
C.若![]() ![]() ![]() |
D.方程![]() |
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8 . 下列结论中正确的命题序号是 ______
①命题“
,
”的否定是“
,
”;
②设
,则“
,
,
是等比数列”的一个必要不充分条件是“
”;
③“
”是“
”的一个充分不必要条件;
④设
为两个平面,则“
”的充要条件是“
内有两条相交直线与
平行”.
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05611fbe265ef9e3d4a8b1821bcbc1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e67e1423322138cfc68c5c85a6215d.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7c77d53297937ba76234c676b1a82d.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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9 . 小王大学毕业后决定利用所学专业进行自主创业,经过市场调研发现,一些电子产品的维修配件的市场需求量较大,小王决定生产这些电子产品的维修配件.已知生产这些配件每年投入的固定成本是
万元,每生产
万件,需另投入成本
万元,维修配件出厂价
元/件.
(1)若生产这些配件的平均利润为
元,求
的表达式,并求
的最大值;
(2)某销售商从小王的工厂以
元/件进货后又以
元/件销售,
,其中
为最高限价
,
为销售乐观系数.当
时,销售商所购进的配件当年能全部售完.若
,
,
成等比数列,问该销售商所购进的配件当年是否能全部售完?(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a63c62729621b0dfbd500f9a7c82f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
(1)若生产这些配件的平均利润为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f26cade8fb52ae18a5258ec4e522e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f26cade8fb52ae18a5258ec4e522e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f26cade8fb52ae18a5258ec4e522e4.png)
(2)某销售商从小王的工厂以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923323a16044410c23ff600ac6efc5e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b5d9bf8b7709ad0b37c03978ae0c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2f27f595f00db7622b039de7fdd1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2b95c648bc8f474979d7bc24905cfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd3f705fa5e271278b3aebd1b152766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368763128d1ad0ffad5d859fef834d0a.png)
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2021-11-21更新
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146次组卷
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4卷引用:河南省商开大联考2021-2022学年高二上学期期中考试理科数学试题
解题方法
10 . 已知等比数列
,
,
,……,
,其中
,
,
(
,
,且
)(等比中项公式:
)
(1)求
,
的值;
(2)试求使
的最小正整数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dc4e868a310c371ff88075d8a966a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a976c188b072c749662aedf482193dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f6398f6c1b247ccb5da442f9c5b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186051a1d252ad9ea22e476fd63bbf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca26f70885b20171dbd21fcafc949fa.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)试求使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdabc9171f469520987cd85060cd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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