设椭圆
的离心率
,过点A(1,
).
(1)求椭圆
的方程;
(2)设
是椭圆
的左顶点,过点
作与
轴不重合的直线
交椭圆
于
两点,直线
分别交直线
于
两点,若直线
的斜率分别为
试问:
是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8bc538bcb9fc4f3316572da2b3310a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d70de1ffdd9aa376b09bbcfa12644a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a0f3f36a61e9f575d816292a9fd9ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae883079147c652ed0d13ebe4061ef9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7490886e2807c7b8a4fa57d99c4dc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f68017bf01680ee0ee025f439f323c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6397afb309b18e6d8a98e1c7e62cfa61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
20-21高二下·陕西榆林·阶段练习 查看更多[5]
陕西省榆林市绥德中学2020-2021学年高二下学期第四次阶段性考试理科数学试题(已下线)选择性必修第一册 综合测试(提升)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)重庆市梁平区2022届高三上学期第一次调研考试数学试题安徽省亳州市第一中学2021-2022学年高二上学期12月教学质量检测数学试题(A)福建省泉州市第六中学2021-2022学年高二上学期期中模块测试数学试题
更新时间:2021-10-03 11:58:39
|
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解答题-问答题
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较难
(0.4)
名校
解题方法
【推荐1】已知椭圆
:
和圆
:
,
,
为椭圆
的左、右焦点,点
在椭圆
上,当直线
与圆
相切时,
.
(Ⅰ)求
的方程;
(Ⅱ)直线
:
与
轴交于点
,且与椭圆
和圆
都相切,切点分别为
,
,记
和
的积分别为
和
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1410414ebd007a6aebfb75240e2b458f.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0adc439eabb8acf3806ac8af85f0410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbad65b3d744b70da2480eee1cdb587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a16545530cb6ce098fc0fd71aa6372.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(Ⅱ)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdd5cfcea65e63aea02f55bd47c5b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317fa4eba865c4d4c5ea584f36c33eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3413895a47e947b0db86fa586caa77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
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解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐2】已知椭圆
的对称中心为坐标原点,焦点在
轴上,
的离心率为
,且过点
, 等轴双曲线
以
的焦点
、
为顶点,动点
在
的右支上且异于顶点.
与
的方程;
(2)设直线
、
的斜率分别为
、
,直线
与
相交于点
、
,直线
与
相交于点
、
. 是否存在常数
使得
,若存在求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a68871af61de95498d346f2eb451aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a30de57df4e6f60bffe9ac591b24fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8387b687579c4d5152175c9d19e24232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b87502d85db80837ca6f2199ed6c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01a3c73d759970e5d84f333cce2d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb85b3fa748136b2f6189c55634eb259.png)
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【推荐1】已知椭圆
的离心率为
,且过点
.
(1)求C的方程;
(2)点M,N在C上,且
,D为垂足,问是否存在定点Q,使得
为定值,若存在,求出Q点,若不存在,请说明理由.
![](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/39ea1f5bdd213c7c3a571b4c38850bf1.png)
(1)求C的方程;
(2)点M,N在C上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368e8fe7aa6d3da98046a80626a70ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4110cc2b5dc3aabd585a8e9a81855a12.png)
您最近一年使用:0次
【推荐2】已知离心率为
的椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f326db309ab6bf16acfab03080650c73.png)
经过点
.
(1)求椭圆
的方程;
(2)若椭圆
的右焦点为
,过点
的直线
与椭圆
分别交于
,若直线
、
、
的斜率成等差数列,请问
的面积
是否为定值?若是,求出此定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f326db309ab6bf16acfab03080650c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c60ad6c32c66e19597834f2c147f13b.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9513f88317f3a6ee8958d10ded2ed59e.png)
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