名校
1 . 已知
,
分别为椭圆
的左、右焦点,
是
上一点,满足
,
是线段
上一点,且
,
,则
的离心率为( ).
![](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/ad523e69a1bf925e73a22900b9855df2.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/b2dfb22c6f1c155747100e7536cd1abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443ae590800a6d8cd26cb054f4dd0029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35c17946854bf2494145e51601824d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-05-26更新
|
214次组卷
|
2卷引用:甘肃省武威市第一中学2020-2021学年高二上学期期末考试数学(理)试题
解题方法
2 . 如图所示,一个圆柱形乒乓球筒,高为24厘米,底面半径为2厘米.球筒的上底和下底分别粘有一个乒乓球,乒乓球与球筒底面及侧面均相切(球筒和乒乓球厚度忽略不计),一个平面与两个乒乓球均相切,且此平面截球筒边缘所得的图形为一个椭圆,则该椭圆的离心率为( )
![](https://img.xkw.com/dksih/QBM/2021/3/22/2683324694454272/2685552749060096/STEM/89c06595-37b3-45a7-93bb-37bca7db1b3c.png?resizew=101)
![](https://img.xkw.com/dksih/QBM/2021/3/22/2683324694454272/2685552749060096/STEM/89c06595-37b3-45a7-93bb-37bca7db1b3c.png?resizew=101)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 已知椭圆
的离心率是
,且椭圆经过点
.
(1)求椭圆
的标准方程;
(2)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/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.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/3c8fe880439919f8948f53788e2dadc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7150a3d82cf94de87c4b78b26d1dc23.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/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ce018c92bc6bc8340f20ca7371d191.png)
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解题方法
4 . 若椭圆
的上、下焦点分别为
、
,双曲线
的一条渐近线与椭圆E在第一象限交于点P,线段
中点的纵坐标为0,则椭圆E的离心率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067f833ea6b87dba5d5c40ad6f4109a7.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/0a461597964ae4b764b5fc736f50e1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
您最近一年使用:0次
2020-04-07更新
|
209次组卷
|
3卷引用:河南省南阳市六校2020-2021学年上学期第二次联考高二年级数学试题
5 . 已知椭圆
的离心率为
在椭圆C上,且
异于点A.
(1)求椭圆C的方程;
(2)若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f189d535315bf145ff077b685fe2849a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(1)求椭圆C的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e0820466f5bfdcfe8458f9bf38aa2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
名校
6 . 已知椭圆
:
的左右焦点分别为
,
,
,
为椭圆
上的两动点,且以
,
,
,
四个点为顶点的凸四边形的面积的最大值为
.
(1)求椭圆
的离心率;
(2)若椭圆
经过点
,且直线
的斜率是直线
,
的斜率的等比中项,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f384e98d574fa2676d61624285f88188.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
您最近一年使用:0次
2020-01-02更新
|
234次组卷
|
2卷引用:安徽省马鞍山市第二中学2020-2021学年高二下学期开学考试理科数学试题
2014·广东韶关·一模
名校
解题方法
7 . 已知椭圆与双曲线
的焦点相同,且椭圆上任意一点到两焦点的距离之和为
,那么椭圆的离心率等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e9f97afe6ae92f4f4e425d90587805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-03更新
|
1148次组卷
|
11卷引用:新疆塔什库尔干塔吉克自治县深塔中学2020-2021学年高二下学期期末数学(理)试题
新疆塔什库尔干塔吉克自治县深塔中学2020-2021学年高二下学期期末数学(理)试题新疆塔什库尔干塔吉克自治县深塔中学2020-2021学年高二下学期期末数学(文)试题安徽省芜湖市华星学校2020-2021学年高二下学期第一次月考理科数学试题北京市第四十三中学2020-2021学年高二下学期期中考试数学试题(已下线)2013-2014学年广东省梅州市重点中学高二下学期期中文科数学试卷【全国百强校】吉林省实验中学2018-2019学年高二上学期期末考试数学(文)试题北京市怀柔区2019-2020学年高二上学期期末考试数学试题江西省宜春市奉新县第一中学2019-2020学年高二下学期第一次月考数学(文)试题(已下线)2014届广东省韶关市高三调研测试理科数学试卷(已下线)2014届广东省韶关市高三调研测试文科数学试卷2015届广东省惠州市高三4月模拟文科数学试卷
名校
8 . 已知直线
与椭圆
相交于
两点,且线段
的中点在直线
上,则此椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec89d17a1b8f7961e2f1f27c2d50685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0618fc0ded5f1b9e7ff5b8b8770dcf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 已知椭圆
的左、上顶点分别是A、B,左、右焦点分别是
、
,若
、
、
成等差数列,则此椭圆的离心率为________ .
![](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/7eb625a01549a61f59a73ff592d1a8a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af6c0a9908bb6a1202d1deb4f4ec56c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
您最近一年使用:0次
2021-01-26更新
|
110次组卷
|
2卷引用:山西省吕梁市2020-2021学年高二上学期期末数学(文)试题
10 . 已知A、B分别是椭圆C:
的左、右顶点,抛物线y2=2px(p>0)与椭圆C相交于M、N两点,若AM、BN的斜率之积为
,则椭圆C离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e43c3621b12e03422ae9868c78e3327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c08788beb1cb729a9c9fd59d2be3e6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-21更新
|
179次组卷
|
2卷引用:安徽省皖江名校联盟2020-2021学年高二下学期开年考理科数学试题