名校
1 . 已知
,则“
”是“
”的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729f4cbf2db857ea9d9d5876c458981b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c21816ba5a1143da799bf053a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7094e5d0a0ab242546a40e121bb0a3.png)
A.充分不必要条件 | B.必要不充分条件 | C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2017-04-11更新
|
1798次组卷
|
10卷引用:福建师范大学附属中学2020-2021学年高二(实验班)上学期期中考模拟试卷数学试题
福建师范大学附属中学2020-2021学年高二(实验班)上学期期中考模拟试卷数学试题2017届福建省高三4月单科质量检测数学理试卷河北省武邑中学2017届高三下学期二模考试数学(文)试题河北省定州中学2017届高三下学期第二次月考(4月)数学试题安徽省宣城市2020-2021学年高二上学期期末理科数学试题安徽省安庆市怀宁中学2020-2021学年高二(实验班)上学期第二次质量检测理科数学试题(已下线)专题1-2 简易逻辑(讲+练)-3广东省广州市2023届高三冲刺(一)数学试题江苏省扬州中学2023届高三下学期5月适应性考试数学试题福建省泉州市安溪第一中学2024届高三下学期4月份质量检测数学试题
名校
解题方法
2 . 在平面直角坐标系
中,椭圆
:
的离心率是
,且直线
:
被椭圆
截得的弦长为
.
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)若直线
与圆
:
相切:
(i)求圆
的标准方程;
(ii)若直线
过定点
,与椭圆
交于不同的两点
、
,与圆
交于不同的两点
、
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f6e613ffa032e7e893daa1970d3948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcddf670657a860c55f0e17cd6c81a1.png)
(i)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(ii)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623afc24f2227004b0e1b3922dfb954b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/8455657dde27aabe6adb7b188e031c11.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/36ce018c92bc6bc8340f20ca7371d191.png)
您最近一年使用:0次
2017-03-13更新
|
3185次组卷
|
5卷引用:四川省威远中学2017-2018学年高二下学期期中考试数学(理)试题
名校
3 . 已知
是椭圆
的左、右焦点,
为坐标原点,点
在椭圆上,线段
与
轴的交点
满足
.
(Ⅰ)求椭圆的标准方程;
(Ⅱ)圆
是以
为直径的圆,一直线
与圆
相切,并与椭圆交于不同的两点
、
,当
,且满足
时,求
的面积
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57716e79a2260980950a62f78e76e88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f392d61933568d27a27568c6298365bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2997663af03995110920b5cba07806d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b55f4ca2d21088854e1aeb040fa950.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/a9b6ef8c4290bdea0c40c8d6372a6b30.png)
(Ⅰ)求椭圆的标准方程;
(Ⅱ)圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3890662033d184c8d3d023bd73ac2aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0adfdc7c15bcd6361c91066d762945.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f48835e10c5427d31bed418c60ecd68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7920f5c1d10af5e508b972670b5ba2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ed6bee57f4526320197d6a7474386f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2017-02-18更新
|
1415次组卷
|
7卷引用:浙江省湖州市菱湖中学2018-2019学年高三上学期期中数学试题
4 . 已知椭圆
的离心率为
,椭圆
和抛物线
交于
两点,且直线
恰好通过椭圆
的右焦点.
(1)求椭圆
的标准方程;
(2)经过椭圆
右焦点的直线
和椭圆
交于
两点,点
在椭圆上,且
,
其中
为坐标原点,求直线
的斜率.
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/dadd869a65ce4d24b87fb4b93b098927.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/0e36261ca045405794ecb55c7ee98e12.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/45e91cf9b97549aa91a0cc1484bbcb2e.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/d8fc6d6f2e6745d1b79bcd5e98580e9a.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/148fa3b16c434f89ae835a41508bd004.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/5c1ab0a3502249fca4f3cb44849d37bc.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/45e91cf9b97549aa91a0cc1484bbcb2e.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/45e91cf9b97549aa91a0cc1484bbcb2e.png)
(2)经过椭圆
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/45e91cf9b97549aa91a0cc1484bbcb2e.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/489bd4d2b6d24c1dbc49bb838b765385.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/45e91cf9b97549aa91a0cc1484bbcb2e.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/958a6bd1576a4d0094aab5ad1ea85589.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/849c996f7645413781d7a5cfc1a71675.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/a452802ab4f041fe961ca1da67c86c91.png)
其中
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/435ed853f8df4884be9b4c88b619a4b3.png)
![](https://img.xkw.com/dksih/QBM/2017/1/3/1619437363863552/1619437364412416/STEM/489bd4d2b6d24c1dbc49bb838b765385.png)
您最近一年使用:0次
2017-02-08更新
|
1238次组卷
|
2卷引用:2017届重庆市第一中学高三上学期期中数学(理)试卷
解题方法
5 . 1.已知椭圆C:
的离心率为
,椭圆C的长轴长为4.
(1)求椭圆C的方程;
(2)已知直线
与椭圆C交于A,B两点,是否存在实数k使得以线段AB为直径的圆恰好经过坐标原点O?若存在,求出k的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆C的方程;
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff3ca9d16ea262007adb2d58467d78d.png)
您最近一年使用:0次
名校
6 . 已知椭圆
的两个焦点坐标分别是
、
,并且经过点
.
(1)求椭圆
的方程;
(2)若直线
与圆
:
相切,并与椭圆
交于不同的两点
、
.当
,且满足
时,求
面积
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fbd80afc6c1f61eae4180d8786f250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02fa296072b97f77c00ca76fbf31f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3051c32c6465c7ef45fbed78fe230339.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.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/69aa6a7790d21362f5f95a08aa5b0f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75812683052e0f7499ac39a81bc918d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2017-02-08更新
|
2027次组卷
|
4卷引用:2016-2017学年湖南长郡中学高二上期中数学(理)试卷
7 . 已知动点
到点
与点
的斜率之积为
,点
的轨迹为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/f4d00fc9-1208-49c4-98f2-31bdb04d0fa5.png?resizew=224)
(1)求曲线
的方程;
(2)若点
为曲线
上的一点,直线
与直线
分别交于
两点,求线段
长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5a63e00afba3220756e65d76e3b25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2767866dc6472299128b8bd074e384fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/f4d00fc9-1208-49c4-98f2-31bdb04d0fa5.png?resizew=224)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/ec56d586906ebaaa3c32c85a415f4c69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2016-12-04更新
|
1674次组卷
|
3卷引用:安徽省合肥市肥东县第二中学2019-2020学年高二(共建班)下学期期中数学(理)试题
名校
8 . 已知椭圆
:
的四个顶点组成的四边形的面积为
,且经过点
.
![](https://img.xkw.com/dksih/QBM/2019/3/23/2166836469366784/2168057961062400/STEM/430bea2feb9549dfb1c6dc293ca12e2e.png?resizew=193)
(1)求椭圆
的方程;
(2)若椭圆
的下顶点为
,如图所示,点
为直线
上的一个动点,过椭圆
的右焦点
的直线
垂直于
,且与
交于
,
两点,与
交于点
,四边形
和
的面积分别为
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8530b8e246a9a5ec9fe3b9c347d5a.png)
![](https://img.xkw.com/dksih/QBM/2019/3/23/2166836469366784/2168057961062400/STEM/430bea2feb9549dfb1c6dc293ca12e2e.png?resizew=193)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.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/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b67f38247dea57c3167f02de51cf3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb556e962e111e59c345be7240e202c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50524aaa1503092bd18419de6d851541.png)
您最近一年使用:0次
2016-12-04更新
|
3039次组卷
|
8卷引用:浙江省镇海中学2018届高三上学期期中考试数学试卷
名校
解题方法
9 . 以椭圆
的中心
为圆心,
为半径的圆称为该椭圆的“准圆”.设椭圆
的左顶点为
,左焦点为
,上顶点为
,且满足
,
.
(1)求椭圆
及其“准圆”的方程;
(2)若椭圆
的“准圆”的一条弦
(不与坐标轴垂直)与椭圆
交于
两点,当
时,试问弦
的长是否为定值,若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da001dad7941e6c9858637d7b62cec59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec1776bfd268b6b807ac573b4a87ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3d196cfee8345bd28a2f3814b676f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653ca8942d674ca16b0b34ba228c1927.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92401170a0eaa13334060d44a1929d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
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2016-12-04更新
|
706次组卷
|
3卷引用:四川省内江市威远中学校2022-2023学年高二下学期期中考试数学(文)试题
解题方法
10 . 已知椭圆
的右焦点为
,且点
在椭圆上.
(1)求椭圆
的标准方程;
(2)过椭圆
上异于其顶点的任意一点
作圆
的两条切线,切点分别为
(
不在坐标轴上),若直线
在
轴,
轴上的截距分别为
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dfb290b1a84f670549554a0c988593.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597b9723e2ab9eab0ca81152fad8d0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda7bde4ecc7413edffcff08e2d62a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81717125fadcf1b65daddd2f216731c8.png)
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