名校
1 . 已知
是椭圆
的左焦点,P是此椭圆上的动点,
是一定点,则|PA|+|PF|的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb4717d7fa6d522090c5e949f650bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e951d6d2369e8da79a793a93a66a4.png)
您最近一年使用:0次
2 . 已知实数
、
满足
,则
的最小值为______________ .
![](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/cc603fea876cbf85b1efcb5bab0d500f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
2021-12-10更新
|
434次组卷
|
2卷引用:2021年黑龙江省哈尔滨市第三中学校高二上学期期中数学试题
3 . 已知椭圆
,直线
过椭圆C的左焦点F且交椭圆于A,
两点,线段AB的垂直平分线交x轴于M点,则
的值为___________ ;
取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/087495ff07f70d0685ef225d31947278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df20433bf5b5b17b8ec492a46f579189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38190077c30a3c97a40a8689eb1dc385.png)
您最近一年使用:0次
4 . 设F1,F2分别为椭圆
的左、右焦点,O为坐标原点,点P是椭圆上的动点,过点F2作∠F1PF2的角平分线PT的垂线,交PT于M,交直线PF1于Q,则点M的横坐标的最小值为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
您最近一年使用:0次
5 . 以
,
为焦点作椭圆,椭圆上一点
到
,
的距离之和为
,求
的最大值______
![](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/dad2a36927223bd70f426ba06aea4b45.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/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4473aa0b75b558b149ed8462689eec8.png)
您最近一年使用:0次
名校
解题方法
6 . 点
是曲线
上一个动点,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb1c729c4586ccd0ca81e52b19994b8.png)
您最近一年使用:0次
2020-07-21更新
|
476次组卷
|
3卷引用:黑龙江省齐齐哈尔甘南县第二中学等八校2020-2021学年高二下学期期中考试数学(文)试题