名校
解题方法
1 . 已知双曲线
过点
且与双曲线
有共同的渐近线,
,
分别是
的左、右焦点.
(1)求
的标准方程;
(2)设点
是
上第一象限内的点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db784004e82c64c5f290e52b6c27056a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3eadb24687aacbe863534bfa599b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34005d3b709a89e3db6bb786bbfb2369.png)
您最近一年使用:0次
2024-02-14更新
|
1044次组卷
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4卷引用:2.3.2 双曲线的性质(二十二大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.3.2 双曲线的性质(二十二大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)上海市向明中学2023-2024学年高二下学期期中考试数学试题1号卷·A10联盟2022-2023学年(2021级)高二上学期11月期中联考数学试卷(北师大版)江西省部分学校2023-2024学年高二下学期3月月考数学试题(九省联考新题型)
解题方法
2 . 已知直线
被圆
:
截得的弦长为
,且
.
(1)求圆
的方程;
(2)已知直线
的方程为
、直线
的方程为
和直线
的方程为
,且圆
是
的内切圆,令
的面积
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc2cd025b8c048a0174b2855f9cdc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258f7027c9297624dec0f9b587887275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e56cf269ce04b347d36ce1daaab1e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db36b05ca6e82ba23fe69aecd514b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2709ca478fb15ea08e8aa55328eae8e6.png)
您最近一年使用:0次
3 . 已知圆
:
(
)分别与
轴、
轴交于点
,
(均异于坐标原点
),过点
作两条直线
,
,斜率分别为
,
,且
,直线
与
轴交于点
,直线
与圆
交于
,
两点.
(1)若
,
,求直线
的方程;
(2)若原点
到直线
的距离为
,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9650b604e20d47100703f15033044648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a62c9695f5a1691c5fe8724fa764b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e2cfdc638df824fb9967f44e436ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5bd9df372dcb66f118f3be8c2e8f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907a673d52825cd7df84b400972d4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)若原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98ee8ce2c56dccae6b63b5a9ca022b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
您最近一年使用:0次
4 . 长度为6的线段,设线段中点为G,线段
的两个端点P和Q分别在x轴和y轴上滑动.
(1)求点G的轨迹方程;
(2)设点G的轨迹与x轴交点分别为A,B(A点在左),与y轴交点分别为C,D(C点在上),设H为第一象限内点G的轨迹上的动点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14f6100d829f197a5dac5197bbe0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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5 . 已知点
是圆
:
上一动点(
为圆心),点
的坐标为
,线段
的垂直平分线交线段
于点
,动点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)
,
是曲线
上的两个动点,
为坐标原点,直线
、
的斜率分别为
和
,且
,则
的面积是否为定值,若是,求出这个定值;若不是,请说明理由;
(3)设
为曲线
上任意一点,延长
至
,使
,点
的轨迹为曲线
,过点
的直线
交曲线
于
、
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bc00148729558bbe435bad010c93fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375bad9fb4833dafb6499a518867bbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b6891348ca27c53f5e732d6187ee12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56b32ddc6969b161fa2a1b3ae73d33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/8b17f20c25bb16153b5f2d25062ed7a7.png)
您最近一年使用:0次
2023-11-09更新
|
1498次组卷
|
4卷引用:2.5 曲线与方程(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.5 曲线与方程(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)湖北省部分重点中学2024届高三上学期第一次联考数学试题辽宁省2023-2024高二上学期期末考试阶段练习数学试题辽宁省朝阳市建平县实验中学2023-2024学年高二下学期4月月考数学试题
6 . 如图,等腰梯形
中,
∥
,
,
间的距离为4,以线段
的中点为坐标原点
,建立如图所示的平面直角坐标系,记经过
四点的圆为圆
.
(1)求圆
的标准方程;
(2)若点
是线段
的中点,
是圆
上一动点,满足
,求动点
横坐标的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/b2a266a892baf8eaaf081367e478f52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/cbec2adb-6fae-4575-a317-ba29b50ac68e.png?resizew=160)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbd9fe572919a0436be2b67a23bd2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2023-11-09更新
|
223次组卷
|
4卷引用:2.1.4 圆与圆的位置关系(十大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.1.4 圆与圆的位置关系(十大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)安徽省马鞍山市2023-2024学年高二上学期期中调研考试数学试题江苏省苏州市2023-2024学年高二上学期11月期中调研数学试题四川省绵阳市南山中学实验学校2023-2024学年高二上学期期末模拟数学试题(六)
7 . 下面是甲、乙两名运动员在某次男子10米气手枪射击选拔赛中的得分数据(单位:环),
分别计算两名运动员得分的平均数与标准差,并分析比较两名运动员的射击水平.
甲 | 9.6 | 9.9 | 9.2 | 9.4 | 9.9 | 10.1 | 10.2 | 9.7 | 9.6 | 9.3 | 10.0 | 10.4 | 10.1 | 9.9 |
乙 | 10.2 | 10.7 | 9.7 | 10.0 | 9.1 | 10.0 | 8.6 | 9.8 | 9.6 | 9.7 | 10.9 | 9.5 | 10.3 | 9.2 |
您最近一年使用:0次
2023-11-06更新
|
218次组卷
|
4卷引用:13.5 统计估计(三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)
(已下线)13.5 统计估计(三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)上海市华东理工大学附属闵行科技高级中学2022-2023学年高二上学期期末数学试题(已下线)专题11统计 (6个知识点10种题型)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(沪教版2020必修第三册)(已下线)第13章 统计(单元重点综合测试)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)
名校
解题方法
8 . 已知函数
.
(1)依次求
,
,
的值;
(2)对任意正整数n,记
,即
.猜想数列
的通项公式,并用数学归纳法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fa4034048d54c492fe0d63802a6c2d.png)
(1)依次求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d55ef0d1b7ea88d92fd6e1ecebb5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1556ea3eb80eaa649bc194ea9fb8756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f00a5dc1147eedb9375c06b44b94bc8.png)
(2)对任意正整数n,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fd35f1c211deee73932955593d76d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd124cd6698fea3fe5711d7548a685.png)
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解题方法
9 . 某医院对患者就诊后的满意度进行问卷调查,患者在问卷上对就诊满意度进行打分,分值为0~5分,其中满意度打分不低于4分表示满意.现随机抽取了100位患者的调查问卷,其满意度打分情况统计如下:
(1)估计患者对该医院满意度打分的平均值;
(2)若该医院一周内共有6000名患者就诊,估计其中表示满意的患者人数;
(3)医院对抽取的调查问卷中1位满意度打0分的患者和3位满意度打1分的患者进行电话回访,并将这四人随机分成A,B两组,每组各两人,求A组的两人满意度打分均为1分的概率.
满意度打分 | 0 | 1 | 2 | 3 | 4 | 5 |
人数 | 1 | 3 | 6 | 10 | 56 | 24 |
(2)若该医院一周内共有6000名患者就诊,估计其中表示满意的患者人数;
(3)医院对抽取的调查问卷中1位满意度打0分的患者和3位满意度打1分的患者进行电话回访,并将这四人随机分成A,B两组,每组各两人,求A组的两人满意度打分均为1分的概率.
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10 . 甲、乙两位同学参加某种科学知识比赛进入了决赛阶段,决赛规则如下:最多进行两轮比赛,每人每轮比赛在规定时间内答两道选择题,答对一道得3分,不作答得1分,答错得
分.第一轮结束总得分高的胜出,得分相同则进行第二轮比赛.对于一道选择题,假设甲选择作答且答对的概率为
,选择作答且答错的概率为
,选择不作答的概率为
,乙选择作答且答对的概率为
,选择作答且答错的概率为
,选择不作答的概率为
.又假设甲答不同的题、乙答不同的题及甲、乙之间的答题均互不影响.
(1)若
,
,
,
,
,
,求:
①第一轮比赛结束甲得分为2分的概率;
②第一轮比赛结束甲、乙的得分相等且概率相等的概率;
(2)若
,求第一轮结束时乙不需要进行第二轮比赛的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51947e18ac12b186aa3c09e62c036af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8c18e87bd2bf30f3ba2baa7bca9638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3576c7dac08ae64d281b8f8309455745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd601ba274538d184f5676d27dfc0a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4051bca0731462877577d812c01c7b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66a05a89b4cfc439f688e509582e134.png)
①第一轮比赛结束甲得分为2分的概率;
②第一轮比赛结束甲、乙的得分相等且概率相等的概率;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634dbbe99b589a39b8306485b7b6bc04.png)
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