名校
解题方法
1 . 已知
的三个内角
所对的边分别为
,且
,则
的最小值为__________ .
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9bb31790e1647bee4e4ef8e90a8e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
您最近一年使用:0次
名校
解题方法
2 . 正方形螺旋线是由多个不同大小的正方形旋转而成的美丽图案,如图,已知第1个正方形
的边长为
,且
,依次类推,下一个正方形的顶点恰好在上一个正方形对应边的
分点处,记第1个正方形的面积为
,第
个正方形的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/652968337da557408ac333af22f023cc.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6453c89d53337176cabd55d840fe7400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf7a9ff5915f80eb1681655186f88c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.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/652968337da557408ac333af22f023cc.png)
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2024-06-03更新
|
147次组卷
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2卷引用:江西省南昌市第十中学2023-2024学年高三下学期“三模”考试数学试题
名校
解题方法
3 . 在
中,内角
所对的边分别为
,
是
的中点,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c85a51a5614f436d0ca75a0ac7b877c.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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb498a2ccf4aa58356cde3129a885a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c85a51a5614f436d0ca75a0ac7b877c.png)
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解题方法
4 .
的三内角A,B,C所对边的长分别是a,b,c,设向量
,
,若向量
与向量
共线,则角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3f209c1eef934d3ec4e1dc0d63a1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ca581e928b560ce57f35f3e94461fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4478fcaef66e8a6a96925ce12d0f8e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5186ca272d0cbf0ee500e4a1dce008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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5 . 在
中,
,
,
分别为三个内角
,
,
的对边,其中
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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解题方法
6 . 在
中,角A,B,C所对的边分别为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33e8045277a342dbbaff481815bd532.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc341c1340550e3b63e1c363ce0dc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33e8045277a342dbbaff481815bd532.png)
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名校
7 . 若实数
,且
,则
的取值范围是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdfb8b0aba93b2eef5f11f4b7ae4592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5919ba051b32aee41762643d72281cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47eeb6c154ce1cc567c040365418fe7d.png)
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2024-04-16更新
|
888次组卷
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3卷引用:江西省南昌市第十九中学2024届高三下学期第三次模拟考试数学试题
江西省南昌市第十九中学2024届高三下学期第三次模拟考试数学试题河北省石家庄市2024届高三下学期教学质量检测(二)数学试卷(已下线)第26题 “等”生“不等”扑朔迷离,改变结构柳暗花明(优质好题一题多解)
名校
8 . 在
中,内角
的对边分别是
,且
,
平分
交
于
,
,则
面积
的最小值为______ ;若
,则
的面积为______ .
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680bd6f250acb8b568510419b59d3e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](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/3fcc480016747ca3595a20507ff3c2c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-03-29更新
|
1025次组卷
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5卷引用:江西省部分地区2024届高三下学期3月月考数学试题
江西省部分地区2024届高三下学期3月月考数学试题广西壮族自治区南宁市、河池市2024届高三教学质量监测二模数学试题河南省部分重点中学2024届高三下学期三月质量检测联考数学试题(已下线)模块3 第6套 全真模拟篇(已下线)第二章 平面向量及其应用章末重点题型复习(2)-同步精品课堂(北师大版2019必修第二册)
9 . 已知等差数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a33aefca1b68d9da255570fbe33fa4.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/ebb333be2a5269c8da9d91cfc00b7ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a33aefca1b68d9da255570fbe33fa4.png)
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10 . 大衍数列,来源于《乾坤谱》中对《易传》“大衍之数五十”的推论,主要用于解释中国传统文化中的太极衍生原理.大衍数列中的每一项都代表太极衍生过程中,曾经经历过的两仪数量的总和.大衍数列从第一项起依次为 0,2,4,8,12,18,24,32,40,50,….记大衍数列
的通项公式为
,若
,则数列
的前30项和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b5e75a9c9d19bae25c92dc48e31588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b7adab471d41ac1b0451f07ab94aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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2024-03-12更新
|
1167次组卷
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7卷引用:江西省九江市同文中学多校联考2024届高三下学期3月月考数学试题