解题方法
1 . 定义离心率是
的椭圆为“黄金椭圆”.已知椭圆
是“黄金椭圆”,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .若“黄金椭圆”
的两个焦点分别为
,
,
为椭圆
上异于顶点的任意一点,点
是
的内心,连接
并延长交
于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978311c18754ba498c1ee0dce2f89482.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029d393bb07b7140905b85f550519de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114c0db91c76cfbe5924fb52fa30f970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5076829e649b3f3866d4a7e07a5713e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddf5a506a90d09af01b81db43f17e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978311c18754ba498c1ee0dce2f89482.png)
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2 . 已知
是椭圆
的两个焦点,
为椭圆
上的一点,且
,若
的面积为9,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.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/9a2d54af835ed981959c1c6280815ece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2024高二下·上海·专题练习
解题方法
3 . 设
、
分别是椭圆
的左、右焦点,点
在椭圆
上,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beed95f1a336c1b38495b037b9b9386d.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/0ee9ce51f55008258322bbe19810f62d.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/2ce67f2138e7295cd72d66b2908cb6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beed95f1a336c1b38495b037b9b9386d.png)
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解题方法
4 . 已知F1,F2分别是椭圆
的左、右焦点,M是椭圆上的动点,点A(1,1),则
的最大值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c609b1e1c509bff8602214be87e6a74c.png)
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5 . 设
为曲线
:
上一点,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b0073fed28fd0caeade3216a5a5b2a.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/7349696cf14aca140c1e74603caf66a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4c1016bf87b416cff0f3fa79d3ef9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513eafd10fa1ec0196562865517e0b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216fecd4e03907236a368d8a70d919a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b0073fed28fd0caeade3216a5a5b2a.png)
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6 . 该椭圆
的左右焦点为
,点
是
上一点,满足
,则
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601debfb59e52704a873fbbadf71649c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.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/e457eb8c28f5ab11a879c954e15ee87e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
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7 . 已知正方体
是边长为1的正方体,点
为正方体棱上的一动点,则使得
的点
有__________ 个.(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa501be0fafcaaa3fa31731e929e301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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8 . 设椭圆C:
的上顶点为A,左、右焦点分别为
,连接
并延长交椭圆C于点P,若
,则该椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f98254a6193566587a70c7d95fdabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b35d50730c973286dc99ed9405f6d4.png)
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9 . 在数学教科书《选择性必修第一册》中,有一段对圆锥曲线统一定义的描述.其中提到:设椭圆的一个焦点为
,长半轴长为
,则一点
在椭圆上当且仅当
.由于圆不在考虑范围内,
,上式经变形化为等价条件
,其中
是椭圆的离心率,我们还把直线
称为椭圆的准线.这样,上式用文字叙述就是:椭圆是到焦点
与到准线
的距离之比等于离心率
的点的轨迹,其中离心率满足
.阅读以上文字,并回答以下问题:设椭圆
恒过定点
,则椭圆的中心到准线的距离的最小值______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24550b13dbecf7d86c7054250e987274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b20e1ce2f94ead74dea8d0bc5d36c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef20073a12bab727faa217718b63414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ead86c3f35c623193e5020e6f7a8383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3ab81f15fc605429b3de9854f7a8d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5bb9d2204b366da605e989c4153819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24550b13dbecf7d86c7054250e987274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5bb9d2204b366da605e989c4153819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b7ac29311c13aa538f3f48cb513b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
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2024·云南红河·二模
名校
解题方法
10 . 已知椭圆
的右焦点为
,直线
交
于
两点,且
轴,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28eb240b0cc60a9a87197ccba88c37a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6bbfead690cce95fbdc4a52c65f3e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ce9cb2a356503a970d6466c75b564c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
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