名校
解题方法
1 . 在平面直角坐标系
中,已知圆
过坐标原点
且圆心在曲线
上.
(1)求圆
面积的最小值;
(2)设直线
与圆
交于不同的两点
、
,且
,求圆
的方程;
(3)设直线
与(2)中所求圆
交于点
、
,
为直线
上的动点,直线
,
与圆
的另一个交点分别为
,
,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9597bbfd80ccf2913141f02920554f5.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9834343dea1c72d50c639109b2e313f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eacdfc00cf0b479a1cfa2f2718f8357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857f5e7c24364ed4b52896bd1b12d453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
您最近一年使用:0次
2020-06-13更新
|
640次组卷
|
3卷引用:江苏省扬州中学2019-2020学年高一下学期期中数学试题
江苏省扬州中学2019-2020学年高一下学期期中数学试题(已下线)知识点06 基本不等式-2021-2022学年高一数学同步精品课堂讲+例+测(苏教版2019必修第一册)四川省遂宁中学校2020-2021学年高二上学期第二次月考数学(理)试题
2020高二·浙江·专题练习
名校
解题方法
2 . 已知圆M的圆心在直线
:
上,与直线
:
相切,截直线
:
所得的弦长为6.
(1)求圆M的方程;
(2)过点
的两条成
角的直线分别交圆M于A,C和B,D,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baabfd32465e9e50409413d9c1358279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9720f48471ba4fe16e06f6248b1a6a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a852d7c0d181966ac42e482475278a.png)
(1)求圆M的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00d5d8cc31aaca7fc2eafb99eac7629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2020-04-06更新
|
1200次组卷
|
5卷引用:【新东方】杭州高二数学试卷238
(已下线)【新东方】杭州高二数学试卷238浙江省“9+1”高中联盟2019-2020学年高二上学期期中联考数学试题黑龙江大庆实验中学2019-2020学年高一6月月考(期中)数学试题(已下线)专题08 直线和圆的方程的压轴题(二)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)(已下线)专题07 《圆与方程》中的解压题压轴题(1)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
11-12高一上·福建泉州·期末
3 . 已知点
及圆
.
(1)若直线
过点
且与圆心
的距离为1,求直线
的方程;
(2)若过点
的直线
与圆
交于
、
两点,且
,求以
为直径的圆的方程;
(3)若直线
与圆
交于
,
两点,是否存在实数
,使得过点
的直线
垂直平分弦
?若存在,求出实数
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb37f3d473c9643b90e8cc19eb0fc6c.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/c4e00ad067ceaf3a8c0452e5cd52a506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5375e9cb3d83b66bba64998de3ad01f.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-04-01更新
|
752次组卷
|
16卷引用:2011年福建省南安一中高一上学期期末考试数学试卷
(已下线)2011年福建省南安一中高一上学期期末考试数学试卷(已下线)2011年浙江省苍南县三校高二上学期期中考试数学理卷(已下线)2011—2012学年四川省雅安中学高二12月月考理科数学试卷(已下线)2011---2012学年四川省成都铁中高二10月考数学试卷(已下线)2011-2012学年山东省汶上一中高二12月月考文科数学(已下线)2011-2012学年山东省金乡一中高二上学期12月月考文科数学(已下线)2012-2013学年福建省南安一中高一寒假作业1数学试卷2014-2015学年海南省四校联考高一下学期期末考试数学试卷广州市培正中学2018年高一第二学期数学必修二模块测试卷一【全国百强校】陕西省西安中学2018-2019学年高一上学期期末考试数学试题(已下线)专题9.4 直线与圆、圆与圆的位置关系(讲)-江苏版《2020年高考一轮复习讲练测》河北省武邑中学2019-2020学年高二上学期开学考试数学试题四川省南充市顺庆区南充高级中学2018-2019学年高二上学期期中数学(文)试题(已下线)专题08 《圆与方程》中的解压题压轴题(2)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)重庆市第一中学校2022-2023学年高二上学期12月月考数学试题新疆维吾尔自治区乌鲁木齐市第六十一中学2024届高三上学期10月月考数学试题
名校
解题方法
4 . 在直角坐标系
中,已知椭圆
的离心率为
,点
在椭圆上,若圆
的一条切线(斜率存在)与椭圆C有两个交点A,B,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/a4bf7eed-da7f-4a23-bcee-3711b4e34d35.png?resizew=219)
(1)求椭圆的标准方程;
(2)求圆O的标准方程;
(3)已知椭圆C的上顶点为M,点N在圆O上,直线MN与椭圆C相交于另一点Q,且
,求直线MN的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3178e2296170fb2ba5ed2c016a1edc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48f8486325f9108107c4539332f8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1695034a4c212e5568fe41625fd2a417.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/a4bf7eed-da7f-4a23-bcee-3711b4e34d35.png?resizew=219)
(1)求椭圆的标准方程;
(2)求圆O的标准方程;
(3)已知椭圆C的上顶点为M,点N在圆O上,直线MN与椭圆C相交于另一点Q,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18f5369a54ae6b62803b24fab7cc66c.png)
您最近一年使用:0次
5 . 已知椭圆
的左、右焦点分别为
,过点
的直线
与椭圆
相切于点
,与
轴交于点
,又椭圆的离心率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b1a449cc-fa0c-4c34-84bc-ae258fa4aa94.png?resizew=209)
(1)求椭圆
的方程;
(2)圆
与直线
相切于点
,且经过点
,求圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993769b494e12c21dff0ee7c53a4a49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56286216c1c313e19f4a196fcaba6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b1a449cc-fa0c-4c34-84bc-ae258fa4aa94.png?resizew=209)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
6 . 已知圆心在
轴上的圆
与直线
切于点
、圆
.
(1)求圆
的标准方程;
(2)已知
,圆
于
轴相交于两点
(点
在点
的右侧)、过点
任作一条倾斜角不为0的直线与圆
相交于
两点、问:是否存在实数
,使得
?若存在,求出实数
的值,若不存在,请说明理由、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7628077dddf3fcdaeabfa6fe12e99d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78fc904f37f1e6df4893c89c948e300c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3d1c57db88154541c5b0dce7e47af0.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5ce23462dfd28929430b74b9590940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-23更新
|
260次组卷
|
3卷引用:浙江省杭州市第二中学2018-2019学年高二上学期期中数学试题
19-20高二上·江苏南通·期末
7 . 抛物线M:
的焦点为F,过焦点F的直线l(与x轴不垂直)交抛物线M于点A,B,A关于x轴的对称点为
.
(1)求证:直线
过定点,并求出这个定点;
(2)若
的垂直平分线交抛物线于C,D,四边形
外接圆圆心N的横坐标为19,求直线AB和圆N的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b6755143e979c2f80e8528703c4bc8.png)
您最近一年使用:0次
8 . 已知圆心C在直线
上的圆过两点
,
.
(1)求圆C的方程;
(2)若直线
与圆C相交于A,B两点,①当
时,求AB的方程;②在y轴上是否存在定点M,使
,若存在,求出M的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaef66a0582e95fb5c57a405acdea9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
(1)求圆C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61afa67b00a0251de102a2e5f7b2311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5cd9290d7cc3b0ca30ae7540b3a69b.png)
您最近一年使用:0次
9 . 已知圆C经过点
,
,且圆心在直线
上
(1)求圆C的方程.
(2)过点
的直线与圆C交于A,B两点,问:在直线
上是否存在定点N,使得
(
,
分别为直线AN,BN的斜率)恒成立?若存在,请求出点N的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6419842dafa17823b3907ec5d46cf9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73293249aff08b24badac1ec04a5b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56eca5455fdd1964dea47a5544a1ad67.png)
(1)求圆C的方程.
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad325c3389ea9d72ebeb1ad89701114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cdbd5595cda7ea9d88a9654ac0151fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ff131c92aa9e10f696d374216cdcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0721e40e4c6929a24c54d2035c4014a.png)
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2020-02-14更新
|
700次组卷
|
3卷引用:河南省鹤壁市2019-2020学年高一上学期期末数学试题
10 . 已知圆
经过
,
两点,且圆心
在直线
:
上.
(Ⅰ)求圆
的方程;
(Ⅱ)若点
在直线
:
上,过点
作圆的一条切线,
为切点,求切线长
的最小值;
(Ⅲ)已知点
为
,若在直线
:
上存在定点
(不同于点
),满足对于圆
上任意一点
,都有
为一定值,求所有满足条件点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d65b917c6c06d836e7aad44c14bc884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(Ⅰ)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(Ⅱ)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc523f751a40a21dece5645b15af9a8.png)
![](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/48f3c9abbd78e9a6840ee5f30381daac.png)
(Ⅲ)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c290d6bcd6423ecc70e1514f145ba45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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