名校
解题方法
1 . 在
中,点O满足
,过点O的直线分别交射线AB,AC于点M,N,且
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182cab09d1a2315ad539541fb447c2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70fa908112806dc176b8abdc3b3aaa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a93a467f11c29aa3ec6124398b1c5a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
A.![]() | B.![]() | C.3 | D.4 |
您最近一年使用:0次
2023-06-23更新
|
888次组卷
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5卷引用:山西省大同市浑源中学2022-2023学年高二下学期期末数学试题
山西省大同市浑源中学2022-2023学年高二下学期期末数学试题浙江省宁波市九校2022-2023学年高二下学期期末联考数学试题(已下线)考点巩固卷12 平面向量(十二大考点)(已下线)第13讲 拓展一:平面向量综合问题-【帮课堂】(人教A版2019必修第二册)(已下线)专题11 平面向量小题全归类(练习)
名校
解题方法
2 . 已知函数
.
(1)若
,
为锐角,
,
,求
的值;
(2)函数
,若存在
,
成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12959f65e9db83c446c35d3261a33171.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5b6bc97286910a7061d4a061d4a558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db73deb6fa502e49e3c873ef076fbc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651e6024810b22183b8ad4c8e61f0c17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a5f1a7618aac18da38cacd8d13d178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-06-17更新
|
377次组卷
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4卷引用:山西省大同市2022-2023学年高一上学期期末数学试题
解题方法
3 .
中,角
,
,
所对的边分别为
,
,
,则如下命题中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
4 . 已知等差数列
的前
项和为
,
,
.
(1)求数列
的通项公式
;
(2)求
的最大值.
![](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/b227fab760d5fa2d25642d7e3470dc38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56275296a2092cea5a60d52e9fe00c00.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2023-06-12更新
|
226次组卷
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4卷引用:山西省大同市第二中学校2024届高三上学期九月月考数学试题
山西省大同市第二中学校2024届高三上学期九月月考数学试题安徽省亳州市第二完全中学2022-2023学年高二下学期期中教学质量检测数学试题(特培班)福建省三明地区部分高中校协作2023-2024学年高二上学期期中联考数学试题(已下线)第03讲 4.2.2等差数列的前 项和公式(1)
名校
解题方法
5 . 在
中,角A,B,C所对的边分别为a,b,c,
,
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562144eedad48a0f540f8fddb6a87046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-06-10更新
|
391次组卷
|
3卷引用:山西省大同市2022-2023学年高一下学期期中数学试题
山西省大同市2022-2023学年高一下学期期中数学试题四川省广元市广元中学2022-2023学年高一下学期期中数学试题(已下线)6.4.3 课时1 余弦定理同步题型分类归纳讲与练(人教A版2019必修第二册)
名校
解题方法
6 . 在锐角
中,角A,B,C所对的边分别为a,b,c,a=2,
,则b的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab61bd07b07bd5c48184ac1a8e484be.png)
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2023-06-10更新
|
693次组卷
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3卷引用:山西省大同市2022-2023学年高一下学期期中数学试题
名校
解题方法
7 . 在
中,角A,B,C所对的边分别为a,b,c,面积为
,已知
.
(1)若
,求
;
(2)若
,
,求
的面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91adb92f13da1e519d457d821ba1c29d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953682eaa7294b153ff70cd5fb496e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe7a93172d308a58200e3c722fe1072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2023-05-24更新
|
816次组卷
|
4卷引用:山西省大同市2022-2023学年高一下学期期中数学试题
名校
解题方法
8 . 已知
,
,
,
,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/9f9c518b6d180258cb834248d6a60294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a76bb966c26aee4c52f5336555844b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
您最近一年使用:0次
2023-05-19更新
|
736次组卷
|
7卷引用:山西省大同市2023届高三下学期5月质量检测数学试题
名校
解题方法
9 . 已知函数
,若任意的正数
,
均满足
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0081f51abd247d5e0fc346a90d8fedac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a06c92e135fe5d16f244ddfa2cb5cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f008cea432b68934066d32243ccf69bf.png)
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2023-05-12更新
|
1962次组卷
|
6卷引用:山西省大同市云冈区现代双语学校2022-2023学年高二下学期期中数学试题
解题方法
10 . 在
中,角
所对的边分别为
,
,
,若
,则
的值为( )
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d175bb633ff53c592cfe85c67364e187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7b008a7a415f5e7b08bc480cec6f7b.png)
A.2013 | B.![]() | C.2029 | D.![]() |
您最近一年使用:0次
2023-04-08更新
|
218次组卷
|
2卷引用:山西省大同市陵川县平城中学2022-2023学年高二下学期第一次月考数学试题