名校
解题方法
1 . 在平面四边形
中,
,
,
,若
为边BC上一动点,当
取最小值时,
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2a696b84492a736c5b444e61b7ad96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7aaa871ceb78e5b80b531a7cf4f1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe020f2d372f3bf21c9ef5c71895132c.png)
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名校
解题方法
2 . 在
中,内角A,B,C所对的边分别为a,b,c,已知
,若
为
的面积,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eb8d72aa02ebcffa150d1689cbedf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1a0f8877e8eba9d3681d1a81679587.png)
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2024-04-29更新
|
452次组卷
|
3卷引用:广东省茂名市高新中学2023-2024学年高一下学期期中测试数学试卷
名校
3 . 在
中,角A,B,C的对边分别是a,b,c,已知
,且
的面积为
,则
的内切圆的半径为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30c196f7c596219bb1ab4bb8eab31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-04-10更新
|
775次组卷
|
9卷引用:河南省焦作市2021届高三四模数学(文科)试题
河南省焦作市2021届高三四模数学(文科)试题河南省2021届高三阶段性测试(六)文科数学试题辽宁省沈阳市级重点高中联合体2020-2021学年高一下学期期末考试数学试题江西省南昌市豫章中学2022届高三入学调研(A)数学(理)试题(已下线)5.5 正余弦定理(精练)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)河南省濮阳市2021届高三二模数学(文)试题辽宁省大连市庄河市高级中学2021-2022学年高二上学期10月月考数学试题(已下线)专题22 正弦定理、余弦定理(已下线)专题11.2正弦定理-重难点突破及混淆易错规避(苏教版2019必修第二册)
名校
解题方法
4 . 若正数
满足
,则
的最小值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9622397024e0752581648b8f19f35b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5abf90e8307ef8dcc1030ebe7fd06a.png)
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名校
解题方法
5 . 数列
满足
,
,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/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e94b7e0d9e764f536997cc0e8e4654e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
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2024-04-04更新
|
684次组卷
|
2卷引用:河南省南阳市西峡县第二高级中学2023-2024学年高二下学期开学考试数学试题
名校
解题方法
6 . 在等比数列
中,
,
为该数列的前
项和,
为数列
的前
项和,且
,则实数
的值是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76eedb8b626a77f8c26d2995bb37067c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e67df7ba7033fe92780c2a5c1c7852d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2024-04-02更新
|
206次组卷
|
2卷引用:江苏省南京市五校2023-2024学年高二下学期期初调研测试数学试题
名校
解题方法
7 . 若
,
且满足
,则
的最小值是______ .
![](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/d66a894fe1c8dddb41d9e4885e979a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b6faf0d79d6add384efbfd620976e9.png)
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2024-03-29更新
|
455次组卷
|
2卷引用:江苏省苏州第十中学2022-2023学年高一下学期期初考试数学试卷
解题方法
8 . 已知数列
的前
项和
,若
是
的等差中项,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.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/ea1b0f7322ab508cb63adaa5e4d57076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057fa70d70a8c12c315e8549e113e13c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4cbaee2f6743d0b47bbfe54359bd4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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2024-03-27更新
|
364次组卷
|
2卷引用:河南省濮阳市2024届高三下学期第一次模拟考试数学试题
9 . 海边近似平直的海岸线上有两处码头、
,且
.现有一观光艇由
出发,同时在
处有一小艇出发向观光艇补充物资,经测量其速度为观光艇的2.13倍,在
处成功拦截观光艇,完成补给.若两船都做匀速直线运动,观光艇行驶向海洋的方向任意的情况下,小艇总可以设定合适的出发角度,使得行驶距离最小,则拦截点
距离海岸线的最远距离为
您最近一年使用:0次
10 . 数学家祖冲之曾给出圆周率
的两个近似值:“约率”
与“密率”
它们可用“调日法”得到:称小于
的近似值为弱率,大于
的近似值为强率
由
,取
为弱率,
为强率,得
,故
为强率,与上一次的弱率
计算得
,故
为强率,继续计算,
若某次得到的近似值为强率,与上一次的弱率继续计算得到新的近似值;若某次得到的近似值为弱率,与上一次的强率继续计算得到新的近似值,依此类推
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598564aec706dff769c5afc4c378c572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe06931e9309ab626a087f252cf4c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8b2ddd6646a556f0a0e0ab5b15c9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9b8fd11f9a3d287e956df276667615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160ae6f860b2c27244b64dc511890a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167765a997bbc662e4ea8f0183848897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb92d6017d8d5cdb1d5cceecfcb3689b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299a08c7f87220f9eca82a1f7a055b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
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