名校
解题方法
1 . 如图所示,已知椭圆
的左右焦点分别为
,点
在
上,点
在
轴上,
,则
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b0dadb875cccce870b69409a476606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/fea68f65429501ec4986bef9cce8dff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ade9ff1a02f622b86b36ffadfbfaae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/d4d339ca-022c-40ed-a36d-740d028ccdd3.png?resizew=170)
您最近一年使用:0次
2024-03-27更新
|
781次组卷
|
3卷引用:山东省青岛市即墨区2023-2024学年高二上学期1月教学质量检测数学试题
解题方法
2 . 已知椭圆
的右焦点为
,
为坐标原点,
上位于第一象限的点
满足
,若直线
的斜率为
,则
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24550b13dbecf7d86c7054250e987274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/d83eeb3772ef399193d5be5e72f58447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
3 . 如图,椭圆
和
有相同的焦点
,离心率分别为
为椭圆
的上顶点,
与椭圆
交于点B,若
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace33c3443bed80275fe9e690d850d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8dafca560c47c8fb4ed217c15539f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f808889a5870c7be4b96be301bb388ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323842451e79bcbb1c1a3a7de77aba21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c689870513662663e618c2de3f5fadf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/9e842587-7f31-42b5-be01-b4e0b0f700ff.png?resizew=198)
您最近一年使用:0次
解题方法
4 . 已知椭圆
:
的左,右焦点分别为
,
,
为坐标原点,若以
为直径的圆与椭圆
在第一象限交于点
,且
是等边三角形,则椭圆
的离心率为______ .
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.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/78e8df70d56fe97837cdfb0cf5de3fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
名校
解题方法
5 . 已知
是椭圆
的左、右焦点,直线
与椭圆相交于
两点,
的平分线交
于点
,且
,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3016baf1a9ce777f16ea9ce469b2510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba129eade3c36a96f86d0d383631c3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e1d2e2c9cd42150c863bf111ce61dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2024-02-28更新
|
295次组卷
|
2卷引用:山西省吕梁市2023-2024学年高二上学期期末数学试题
名校
6 . 点P是椭圆
上一点,
,
分别是其左、右焦点,若
,离心率为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
_________ .
![](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/f6fd7e8d87160b086a1022e76e487277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
解题方法
7 . 已知椭圆
的离心率为
,点
,若椭圆
上存在四个不同的点到点
的距离相等,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b51be66781604a737d01561890ec28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d34f6e131609f6d2b9d426d1b4e297.png)
您最近一年使用:0次
解题方法
8 . 已知椭圆
的左焦点为
,过原点
的直线
交椭圆于
,
两点,点
在第二象限,且
(如图),则椭圆的离心率为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc653312ef32b1e98025b79963cc47d.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/9d8030884be606b9710f058cf49dd81a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/6af3fb0f-65ef-45ee-a96d-26e0441d4326.png?resizew=150)
您最近一年使用:0次
9 . 如图,离心率相同的两个椭圆
和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b911cbde721f39e3857ec8bd4cbcadc.png)
分别是同一个矩形(此矩形的两组对边分别与两坐标轴平行)的内切椭圆和外接椭圆,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1f54c89c1fa3a8451f5db8f41e695d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace33c3443bed80275fe9e690d850d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b911cbde721f39e3857ec8bd4cbcadc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ce64d513d7e870198c26a97de4c428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1f54c89c1fa3a8451f5db8f41e695d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/716972d0-11e2-4290-aeeb-c3d87fd47f77.png?resizew=197)
您最近一年使用:0次
解题方法
10 . 在平面直角坐标系
中,椭圆
和抛物线
交于点A,
,点
为椭圆的右顶点.若
四点共圆,则椭圆离心率为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648e67291723171e251a0ab7be98504c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59da17994cf2b70c559eb5d2d4c8ac4a.png)
您最近一年使用:0次