1 . 若
满足约束条件
则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b74f3266193b23959751f30373d194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1ddeed7b35acd5bd47b69ff5a57f38.png)
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2022-02-06更新
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264次组卷
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2卷引用:安徽省合肥市2021-2022学年高三上学期第一次教学质量检测理科数学试题
2 . 等比数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86551283c9dfa1c39bdc9b0dd546803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
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解题方法
3 . 若x,y满足约束条件
则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c24903b064f6a678db598711c34d721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4489516aca67a6afe53fac2f1477f76.png)
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2022-02-04更新
|
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2卷引用:安徽省芜湖市2021-2022学年高三上学期期末理科数学试题
解题方法
4 . 在数列
中,
,
,
,若数列
是递减数列,数列
是递增数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2f03f58e3c85de45bd3fd86a8a66f7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07404ab51f404f9411f79bd4f1fde654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76aa79317075df881a7c437da223f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb40dde3892bc78d3796d37e812a4f29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d8994201f8d7c176c2a039dada4fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17afed731b6dd93f9bedd81adfc0fff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2f03f58e3c85de45bd3fd86a8a66f7.png)
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2022-02-04更新
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2卷引用:安徽省宣城市2021-2022学年高二上学期期末数学试题
5 . 已知数列
满足
,定义使
(
)为整数的k叫做“幸福数”,则区间
内所有“幸福数”的和为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6d6e2b8f65bca3ca6798cc79ee1ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcef6f2b967b9d773482a6ea0ab3411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e7fe268785df501e8a960fb7e3a993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77707636638cd40540900577d89dc78.png)
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3卷引用:安徽省芜湖市2021-2022学年高二上学期期末数学试题
名校
6 . 在
中,角A,B,C所对的边分别为a,b,c,若
,
,且
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a74c3e9a8f3f11e98b4fa659a97679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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5卷引用:安徽省宣城市2021-2022学年高三上学期期末文科数学试题
名校
7 . 设数列
的前n项和为
,若
,且
是等差数列.则
的值为__________ .
![](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/ab8c8e74213dd6be2dd4d34c1aae3817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f9455bb1be0546692d9b0cfdcc9017.png)
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6卷引用:安徽省六安市第一中学2021-2022学年高二上学期期末数学试题
安徽省六安市第一中学2021-2022学年高二上学期期末数学试题(已下线)4.2等差数列C卷单元综合测试-数列(已下线)第四章 数列章末检测卷(一)-【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)福建省漳州市东山县2023-2024学年高二上学期期中数学试题(已下线)4.2.2 等差数列的前n项和公式——课后作业(巩固版)
名校
解题方法
8 . 已知函数
,数列
是正项等比数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d584d4c9dd68ea91c5db813684723b1.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd2fe2d15ffb8fe75f477e1f95e7662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287d1cf8d37a30e2cf890fb4cce63d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d584d4c9dd68ea91c5db813684723b1.png)
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4卷引用:安徽省六安市第一中学2021-2022学年高二上学期期末数学试题
名校
9 . 已知
且
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3644994397fab062669bab9f09441ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5728418da4e9fb0e8a2016b1e127308b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41ad0925d8c46967dcd6ab072b391cc.png)
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3卷引用:安徽省安庆市2021-2022学年高一上学期期末数学试题
名校
10 . 在正项等比数列{an}中,若
,
与
的等差中项为12,则
等于_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc018264d6daf0833c960ea282165d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
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5卷引用:安徽省合肥市第五中学2022-2023学年高二下学期学科教学评价数学试卷