名校
解题方法
1 . 在
中,
,
,点D为
的中点,点E为
的中点,若
,则
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27c21a8c8f5987d350cbab0d56d9bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59809f2fa9ce4c833cdf5fe102feb8d8.png)
您最近一年使用:0次
解题方法
2 . 已知正项数列
满足
(
,且
),
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de19a41401b6fd32d88a782466e585f.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54f11c73a996bcd0aae0275d0c7b7703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de19a41401b6fd32d88a782466e585f.png)
您最近一年使用:0次
名校
解题方法
3 . 已知
的内角
的对边分别为
,下列结论错误的是_________________ .
①若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
②若
,则符合条件的三角形有2个
③若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
④若
的面积
,则
![](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/76f0649064a085fb74c997fb507a9b6d.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b610c855735a35d4168ac6a0f72ef904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5af880e80cece02c120a5676324a60b.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ea8057b232457f40ea03d7f3e125a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115046b30d880f5d8b05e29ab7406697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
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解题方法
4 . 若实数
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/413809b846e0b45e0a00f387420e67e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
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5 . 已知各项均为正数的等比数列
的前4项和为40,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c68faa39f7755d6aa3ab960f3d12ce2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
您最近一年使用:0次
6 . 已知数列的前
项和为
,
,
,
,则
您最近一年使用:0次
解题方法
7 . 在锐角
中,若
,且
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1137646fc639cd12cc7eb9363f9891c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13832681708f604e88b3067b72f6e9a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
您最近一年使用:0次
2024-03-25更新
|
681次组卷
|
6卷引用:内蒙古自治区包头市2024届高三下学期适应性考试文科数学试题(二)
内蒙古自治区包头市2024届高三下学期适应性考试文科数学试题(二)上海市闵行第三中学2023-2024学年高一下学期3月月考数学试题(已下线)6.4.3.2?正弦定理15种常考题型归类(2)-高频考点通关与解题策略(人教A版2019必修第二册)(已下线)6.4.3.2 正弦定理——课后作业(巩固版)(已下线)第九章:解三角形章末重点题型复习--同步精品课堂(人教B版2019必修第四册)陕西省安康市高新中学2024届高三下学期5月适应性试题(二)文科数学试题
8 . 用一个圆心角为,面积为
的扇形
(
为圆心)用成一个圆锥(点
恰好重合),该圆锥顶点为
,底面圆的直径为
,则
的值为
您最近一年使用:0次
名校
解题方法
9 . 已知数列
的前
项和
,当
取最小值时,![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce817f902302ebdd5a599e43df77614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee36968ec2e73add390ab01e2d8fde9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
您最近一年使用:0次
2024-03-21更新
|
3353次组卷
|
6卷引用:内蒙古自治区包头市2024届高三下学期适应性考试理科数学试题(二)
2024高三·全国·专题练习
解题方法
10 . 在
中,三个内角
所对的边分别为
,
,
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819c7a62f0c3f64f53370d19db912c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
您最近一年使用:0次