名校
解题方法
1 . 知椭圆E:
的左右焦点分别为
,
,过
且斜率为
的直线与椭圆的一个交点在x轴上的射影恰好为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6597a64cfa219358a2a910841346085.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/851ec3fa-6bac-447e-a5b7-aca9483757fd.png?resizew=199)
(1)求椭圆E的方程;
(2)如图,下顶点为A,过点
作一条与y轴不重合的直线.该直线交椭圆E于C,D两点.直线AD,AC分别交x轴于点H,
求证:
与
的面积之积为定值,并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9d55173f26afdf0e37462b556a605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6597a64cfa219358a2a910841346085.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/851ec3fa-6bac-447e-a5b7-aca9483757fd.png?resizew=199)
(1)求椭圆E的方程;
(2)如图,下顶点为A,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcf82d01c39fd2c96e1edba0ad37dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca0af163f4d59eb4125eb28dccc5ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b632aefa05bf70136d375c7995fec2.png)
您最近一年使用:0次
2022-11-24更新
|
1070次组卷
|
19卷引用:江苏省南京市建邺高中2022-2023学年高二上学期10月月考数学试题
江苏省南京市建邺高中2022-2023学年高二上学期10月月考数学试题(已下线)专题3.16 圆锥曲线中的定点、定值、定直线问题大题专项训练(30道)-2022-2023学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)高二上学期期末【压轴60题考点专练】(选修一+选修二)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)(已下线)【新东方】高中数学20210527-014【2021】【高二下】云南省曲靖市沾益区第四中学2020-2021学年高二5月月考数学(文)试题云南省昆明市第一中学高中新课标2023届高三第一次摸底测试数学试题(已下线)专题4 求面积运算(提升版)江西省临川第一中学2023届高三上学期期中考试数学(文)试题(已下线)第26讲 圆锥曲线中定值问题(1)九师联盟2020-2021学年高三上学期12月联考(新高考)数学试题(已下线)黄金卷11 【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(广东专用)湖北省孝感高中2020-2021学年高三上学期12月联考数学试题山东省济南市历城第二中学2020-2021学年高三下学期检测数学试卷(一)吉林省延边州2023届高三统考二模数学试题(已下线)专题09 平面解析几何(已下线)专题17 押全国卷(理科)第20题 圆锥曲线天津市武清区杨村第一中学2023届高三下学期第二次热身练数学试题江苏省苏南名校2023-2024学年高三上学期9月抽查调研数学试题湖南省衡阳市衡阳县第一中学2024届高三上学期11月月考数学试题
2 . 公元前 4 世纪, 古希腊数学家梅内克缪斯利用垂直于母线的平面去截顶角分别为锐角、钝角和直角的圆锥,发现了三种圆锥曲线.之后,数学家亚理士塔欧、欧几里得、阿波罗尼斯等都对圆锥曲线进行了深 入的研究.直到 3 世纪末,帕普斯才在其《数学汇编》中首次证明:与定点和定直线的距离成定比的点的轨迹是圆锥曲线, 定比小于、大于和等于 1 分别对应椭圆、双曲线和抛物线.已知
是平面内两个定点, 且 |AB| = 4,则下列关于轨迹的说法中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
A.到![]() |
B.到![]() |
C.到![]() |
D.到![]() |
您最近一年使用:0次
2023-01-02更新
|
399次组卷
|
3卷引用:北京大学附属中学2022-2023学年高二上学期期末复习数学试题(2)
北京大学附属中学2022-2023学年高二上学期期末复习数学试题(2)上海市上海师范大学附属中学2023-2024学年高二上学期期中考试数学试卷(已下线)专题11圆锥曲线单元复习与测试(21个考点25种题型)-【寒假自学课】2024年高二数学寒假提升学与练(沪教版2020)
解题方法
3 . 已知椭圆C;
的左右顶点分别为
,
,以线段
为边的一个正三角形与椭圆C的一个公共点为P(
,
).
(1)求椭圆C的方程;
(2)若过椭圆C的右焦点F的直线与椭圆C交于点M,N,直线
M,
交于点D,求证:点D在定直线l上,并求出直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c55e4f3eda94bc505f103b10bc1fee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca9e3eb562bbbe40fadca9813c332a5.png)
(1)求椭圆C的方程;
(2)若过椭圆C的右焦点F的直线与椭圆C交于点M,N,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b06b75fb4e379ff3b99e68f40136cad.png)
您最近一年使用:0次
2022-04-25更新
|
587次组卷
|
4卷引用:重庆市缙云教育联盟2021-2022学年高二下学期4月质量检测数学试题
4 . 已知平面上动点
与定点
的距离和
到定直线
的距离的比是常数
,动点
的轨迹为曲线
.直线
与曲线
交于
两个不同的点.
(1)若直线
的方程为
,求
的面积;
(2)若
的面积为
,证明:
和
均为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1325c6fe42a9e5c04520d8a9bb6821b8.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae342dcb93e0e6f017093cacc5ac977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3625894aa1bea3218ea0b8c561a18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22fab302e4b48fcfe0d6043bd233b95.png)
您最近一年使用:0次
2022-11-12更新
|
307次组卷
|
4卷引用:山西省太原市2022-2023学年高二上学期期中数学试题
名校
解题方法
5 . 已知椭圆
:
的右焦点和上顶点均在直线
上.
(1)求椭圆
的方程;
(2)已知点
,若过点
的直线
与椭圆
交于不同的两点
,
.直线
和直线
的斜率分别为
和
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7451b947d1adea22bc04070efdd2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85698e3df712bae578da81b1e55d8922.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8213d686f48c855a41eb94b9ede1f90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a081d97d0f2cd61d76d3a07370aba8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2562424a83aae7e4b3f8adf90307961a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b58edb637c5dfa03794f3952de9d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8869f1b1c62e8e88f528a38d6d71968a.png)
您最近一年使用:0次
2022-10-26更新
|
855次组卷
|
3卷引用:黑龙江省大庆市肇州县第二中学2022-2023学年高二上学期第二次月考数学试题
名校
解题方法
6 . 生活中,椭圆有很多光学性质,如从椭圆的一个焦点出发的光线射到椭圆镜面后反射,反射光线经过另一个焦点现椭圆C的焦点在x轴上,中心在坐标原点,从左焦点
射出的光线经过椭圆镜面反射到右焦点
,这束光线的总长度为4,且椭圆的离心率为
,左顶点和上顶点分别为A、B.
(1)求椭圆C的方程;
(2)点P在椭圆上,求线段
的长度
的最大值及取最大值时点P的坐标;
(3)不过点A的直线l交椭圆C于M,N两点,记直线l,
的斜率分别为
,若
,证明:直线l过定点,并求出定点的坐标.
![](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/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆C的方程;
(2)点P在椭圆上,求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/112a622a3a8ca1ed0bfca9f3f142ec21.png)
(3)不过点A的直线l交椭圆C于M,N两点,记直线l,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d42cb68c5c877a455ba7ac0a6b6a651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667cb59b1d1cb18b48d881b154013650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f280c77f48e910f8cf8ed0b138f255.png)
您最近一年使用:0次
解题方法
7 . 设椭圆C:
(
)过点
,离心率为
,椭圆的右顶点为A.
(1)求椭圆C的方程;
(2)若直线
与椭圆交于两点M,N(M,N不同于点A),若
,求证:直线l过定点,并求出定点坐标
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32476e6bf0fed9c3d3f23ebfd40aa693.png)
您最近一年使用:0次
解题方法
8 . 如图,已知椭圆
的左、右顶点为
、
,又
、
与椭圆短轴的一个端点组成的三角形面积为
.圆
的圆心为椭圆的左顶点
.
(1)求椭圆
的方程;
(2)当圆
半径
时,过椭圆外一点垂直于
轴的圆
的切线为
,点
是椭圆
上位于
轴上方的动点,直线
、
与直线
分别交于
、
两点,求
的最小值;
(3)圆A与椭圆
交于点
、
.点
是椭圆
上异于
、
的任意一点,且直线
、
分别与
轴交于点
、
,
为坐标原点.求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5f65e93fbccf9d7743ea844f2ad57d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/3/7607ec66-8833-4927-be03-9ed992a2f631.png?resizew=260)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6ee74e19ae838c6ac060ba16569e25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/803a617fb53e67edbc2955cb629c329b.png)
(3)圆A与椭圆
![](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/dad2a36927223bd70f426ba06aea4b45.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/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2382c2608298c372d89106b359c0f495.png)
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9 . 椭圆C的方程为
,过椭圆左焦点
的直线与椭圆相交于点P、Q,椭圆的右焦点为
,已知
的周长为8,且椭圆过点
.
(1)求椭圆C中a,b的值;
(2)过椭圆C的右焦点
作直线
交椭圆C于A,B两点,交
轴于M点,若
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/4fea5f7430235e65d2c2e6b2ecc46712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b87b151f60a54dc8156a69b145bb866.png)
(1)求椭圆C中a,b的值;
(2)过椭圆C的右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dea56f8525a488b589c9768d4c1e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe16428a54a951fb661ff73e6224624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32705e629d8b9187b53efeee6605af15.png)
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10 . 已知椭圆
:
过点
,且点
到其两个焦点距离之和为4.
(1)求椭圆
的方程;
(2)设
为原点,点
为椭圆
的左顶点,过点
的直线
与椭圆
交于
,
两点,且直线
与
轴不重合,直线
,
分别与
轴交于
,
两点.求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cba284d675a3028d7a8d54f1f8ae70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.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/dad2a36927223bd70f426ba06aea4b45.png)
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/43995a8753fb39e768bc0e04a0e2a7b3.png)
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