名校
解题方法
1 . 已知椭圆
的焦点
,且椭圆
的离心率为
.
(1)求椭圆
的方程;
(2)若
、
为
上不同的两点,动点
、
满足:
,
,且
在
上.
(i)求证:点
在
上;
(ii)若
过焦点
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/c5db41a1f31d6baee7c69990811edb9f.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/352c283e5e0316b9e27768db28296491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecef922a02b99afe79e373de2beb7646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(i)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2022-03-22更新
|
548次组卷
|
4卷引用:河北省唐山市曹妃甸区曹妃甸新城实验学校(北京景山学校曹妃甸分校)2022-2023学年高二上学期期末数学试题
名校
解题方法
2 . 已知椭圆
,P是椭圆的上顶点,过点P作斜率为
的直线l交椭圆于另一点A,设点A关于原点的对称点为B.
(1)若直线PA、直线PB的斜率分别为
,
,求
;
(2)设线段PB的中垂线与y轴交于点N,若点N在椭圆内部,求斜率k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb166b53a49e393871bcb14a528792.png)
(1)若直线PA、直线PB的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b61e87566a204ffe7247f2fd92bbcb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5822482abbe136f3b372db4499f4c47a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b5e95eecb21dfbcaf012a4fc5dfaa9.png)
(2)设线段PB的中垂线与y轴交于点N,若点N在椭圆内部,求斜率k的取值范围.
您最近一年使用:0次