解题方法
1 . 已知等比数列
有
项,
,所有奇数项的和为85,所有偶数项的和为42,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2def5aa62f497709e1bd8258583d62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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解题方法
2 . 已知数列
为等差数列,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67bb9405b5d575f38602e4036ef6f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9f1f763c066c916bae475f51e63026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
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2024高二上·全国·专题练习
解题方法
3 . 在数列
中,
,
,则通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fd4b4529139b37e63d15ab26664aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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解题方法
4 . 若实数
,
满足
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c24fd294ec649130c6a76164256b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7c99486743e17633d086d868f0680c.png)
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解题方法
5 . 已知实数,且
,则
的最小值是
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名校
解题方法
6 . 已知等差数列
是递增数列,且满足
,
,令
,且
,则数列
的前
项和为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393ab8cef9e50955d6549d91a837f8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dea12e7026603de7144048c5eee90bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5262a482e7da77671e8639b79f8e07d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd705b936f0417aa140f274e195f56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2024-01-12更新
|
820次组卷
|
4卷引用:内蒙古呼和浩特市2024届高三上学期学业质量监测数学(文)试题
名校
7 . 已知
为等差数列,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6b2580f6a62d12b1e0468663068367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d79ae517602a29ac7e9b15a6975e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
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2023-09-03更新
|
480次组卷
|
4卷引用:内蒙古呼和浩特市2024届高三第一次质量监测理科数学试题
内蒙古呼和浩特市2024届高三第一次质量监测理科数学试题江苏省连云港市赣榆第一中学2023-2024学年高二上学期10月教学质量监测数学试题(已下线)4.2 等差数列(1)(已下线)第02讲 4.2.1等差数列的概念(2)
解题方法
8 . 比较大小:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d0082ce830a78de5e1ba77f130e2e9.png)
____________
.(请从“
”“
”“
”中选择合适的符号填入横线中)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d0082ce830a78de5e1ba77f130e2e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
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2023-10-12更新
|
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5卷引用:内蒙古自治区呼和浩特市内蒙古师范大学附属第二中学2023-2024学年高一上学期10月月考数学试题
9 . 若不等式
的解集为
,则关于x的不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d761de6888dd491d23eca202b4befd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da331b83b4d66da80cc3c4fdc38eabfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2697d922682f9c3420127de863191d57.png)
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2023-03-25更新
|
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3卷引用:内蒙古呼和浩特市2022-2023学年高一下学期3月质量监测数学试题
内蒙古呼和浩特市2022-2023学年高一下学期3月质量监测数学试题(已下线)高一上学期第一次月考数学模拟试卷(第一章+第二章)-【题型分类归纳】广东省潮州市暨实高级中学2023-2024学年高一上学期第一次质量检测数学试题B
10 . 在
中,
,
,
,
的面积为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbf93646f0428187219e7bb62bc4515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc4f7ae63e7f73ea4f264b12161713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-03-14更新
|
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2卷引用:内蒙古呼和浩特市2023届高三第一次质量数据监测文科数学试题