解题方法
1 . 设集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9810f27059e2beb86c8c72ae1730ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327bdaf876cffcaaefc0cc1e33a0895d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 如图,在凸四边形
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/027b0d77-4408-4ec0-8f87-b57e04d1ae76.png?resizew=138)
(1)若
,求
的长;
(2)若该四边形有外接圆,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebce4fcd35cffdac473cc02ac54456e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/027b0d77-4408-4ec0-8f87-b57e04d1ae76.png?resizew=138)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96696ad56e14d8cbd975c7c8cf84a420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)若该四边形有外接圆,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c472c360c80e44bc259e35b81d2b845e.png)
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3 . 已知数列
中,
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d853bd586e276d3de8bdf5fdb70b95e0.png)
A.![]() ![]() |
B.![]() |
C.![]() ![]() ![]() |
D.![]() ![]() |
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2023-12-30更新
|
1100次组卷
|
4卷引用:山东省日照市2024届高三上学期12月校际联合考试数学试题
4 . 已知数列
满足
,
,数列
的前
项和为
,设
,
表示不大于
的最大整数.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e3a9ec8c6f33cbecfe32a6323ef4f5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09961b42559a89a688c446183889fb1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.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/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e3a9ec8c6f33cbecfe32a6323ef4f5.png)
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名校
5 . 若
,
,
,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/a7cbc4f3d96aad067ef6312f59b244fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ca549fd79968257bf4ddb2660397fc.png)
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2023-12-29更新
|
385次组卷
|
2卷引用:山东省青岛市莱西市2024届高三上学期教学质量检测(一)数学试题
6 . 已知
分别为
内角
的对边,若
同时满足下列四个条件中的三个:①
;②
;③
;④
.
(1)满足有解三角形的序号组合有哪些,说明理由?
(2)请在(1)所有组合中任选一组,求对应
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0bdb38a82e078dfa81fa7768fffd29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2491be8a06556289e629db5f4bbbeb2e.png)
(1)满足有解三角形的序号组合有哪些,说明理由?
(2)请在(1)所有组合中任选一组,求对应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-12-29更新
|
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7卷引用:山东省安丘市青云学府2023届高三下学期二模考前适应性练习(一)试题
山东省安丘市青云学府2023届高三下学期二模考前适应性练习(一)试题(已下线)技巧04 结构不良问题解题策略(精讲精练)-1浙江省杭州第二中学2023届高三下学期3月月考数学试题(已下线)模块六 专题2 易错题目重组卷(山东卷)重庆市巴蜀中学校2023届高三上学期适应性月考(五)数学试题福建省南平市南平一中2023-2024学年高二上学期第一次月考数学试题(已下线)第11讲 6.4.3 第2课时 正弦定理 (1)-【帮课堂】(人教A版2019必修第二册)
7 . 已知等差数列
的前
项和为
,
,
,数列
满足
,
.
(1)求
的通项公式:
(2)设数列
满足
,
①求
前
项中所有奇数项和
,②若
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033fd16b5cffcaf285d28d7583e0ff3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72ddd7de598464a37b10f03f67b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ce1a0815e84c82544abd418572f4b6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ce005f02c09735be7b52ba3e517dd6.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d564e9b1fdb2f528f2c9591946b167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2caf8c4806569a493c79902a617f4c2e.png)
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2023-12-29更新
|
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4卷引用:山东省新泰市第一中学老校区(新泰中学)2024届高三上学期第三次大单元考试数学试题
山东省新泰市第一中学老校区(新泰中学)2024届高三上学期第三次大单元考试数学试题天津市和平区耀华中学2024届高三上学期期末数学试题(已下线)考点10 数列求和 2024届高考数学考点总动员【练】(已下线)2024年天津高考数学真题平行卷(基础)
8 . 公路北侧有一幢楼,高为60米,公路与楼脚底面在同一水平面上.某人在点
处测得楼顶的仰角为
,他在公路上自西向东行走,行走60米到点
处,测得仰角为
,沿该方向再行走60米到点
处,测得仰角为
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b363797455e171e5dff9193eb28cc9.png)
A.![]() | B.3 | C.![]() | D.![]() |
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名校
解题方法
9 . 已知
为正实数,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45900deae0489e87fe448948e8091c4.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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2023-12-28更新
|
922次组卷
|
3卷引用:山东省泰安市新泰中学2024届高三上学期期末仿真模拟数学试题
山东省泰安市新泰中学2024届高三上学期期末仿真模拟数学试题江苏省南通市海安高级中学2024届高三上学期12月月考数学试题(已下线)考点9 与二次函数相关的参数问题 --2024届高考数学考点总动员【讲】
名校
解题方法
10 . 已知数列
前
项和为
,且对任意的正整数
与
的等差中项为
.
(1)求数列
的通项公式;
(2)证明:
.
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10d4d06977e9af90575b6eefbf0d058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a7f6ad5549dd3caa69bd5cb02669b2.png)
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