名校
1 . 已知椭圆
的左、右焦点分别为
为椭圆上不与顶点重合的任意一点,I为
的内心,记直线
的斜率分别为
,若
,则椭圆E的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ed463bf16c78a4bbb9d3acff922afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f10a009347b185106fb203025e6eeab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03fe40046b7c6c8bda7a90e1b66fe13.png)
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2024-05-11更新
|
894次组卷
|
2卷引用:2024年新高考Ⅰ卷浙大优学靶向精准模拟数学试题(六)
2024·全国·模拟预测
解题方法
2 . 已知椭圆
的左、右焦点分别为
,过点
且斜率为
的直线与椭圆
的一个交点为
,若
,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.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/28384448ee5ed0bb5ca717f26bc56165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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名校
3 . 已知
为椭圆
的两个焦点,过原点的直线交椭圆C于P,Q两点,且
,则
的内切圆半径为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5023d88e11dce13bd4a64de92165bcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ffac516145b99309bc1b248fc625ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f744ab198210340a54adb2ae4a6b9b.png)
您最近一年使用:0次
2024-05-05更新
|
314次组卷
|
2卷引用:2024年新高考Ⅰ卷浙大优学靶向精准模拟数学试题(七)
2024高三下·全国·专题练习
4 . 已知椭圆
:
的左、右焦点分别为
,
,长轴长为
,过点
且斜率为
的直线与椭圆
交于点
,且
,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/b53c7539ed297ea63b9ace6f5cc58ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.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/28384448ee5ed0bb5ca717f26bc56165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2024高三·全国·专题练习
5 . 若椭圆1上的点P到左焦点的距离是5,则点P到右准线的距离是
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
6 . 已知椭圆
,点
为椭圆上异于顶点的任意一点,过点
作长轴的垂线,垂足为
,连接
并延长交椭圆于另一点
,连接
并延长交椭圆于点
,若
,则椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de40fe171c8d74b2a914dbe9bfe10f10.png)
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7 . 若
为椭圆
上一点,
,
为
的两个焦点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1565358ed95afa71757c1d7d1fd2ea.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ea0965aa6af30c1d18f8503ba085a6.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1accaa97c379475f35e61f30d3b64fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1565358ed95afa71757c1d7d1fd2ea.png)
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8 . 已知椭圆
短轴长为4,焦距为
,
分别是椭圆的左、右焦点,若点
为
上的任意一点,
的最小值为_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f98254a6193566587a70c7d95fdabf.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/c59533a0675ad6f1e73be6bc4646c7c1.png)
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名校
9 . 抛物线
与椭圆
有相同的焦点,
分别是椭圆的上、下焦点,P是椭圆上的任一点,I是
的内心,
交y轴于M,且
,点
是抛物线上在第一象限的点,且在该点处的切线与x轴的交点为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16231e127f8a00b343c1986f65f0ab56.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332f0dc7afc21adbab48acae2eaf875b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede935419d69a161bb22fd513647da06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3900190c901795456d20b1939916dafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc675d3c35af2425ec134743250ceae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c153922d3e1fec7dcb99c1713459547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57aa9c9b0ab417c0b952809669f6161b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16231e127f8a00b343c1986f65f0ab56.png)
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2024-02-27更新
|
898次组卷
|
5卷引用:重庆市开州中学2024届高三下学期高考模拟考试(二)数学试题
2024高二上·全国·专题练习
解题方法
10 . 设实数
满足
的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6070a8e2371693eced7fcc80fd9ff005.png)
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