解题方法
1 . 已知椭圆C:
的左、右焦点分别为
,
,P为C上一点,且
,
.
(1)求
,
的坐标.
(2)若直线l与C交于A,B两点,且弦AB的中点为
,求直线l的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337feeb54773e52fdf47b09d35414369.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/db8a952a1380148042d4ef38e491a532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d5292ed97f06ad4423c7214f5642fc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(2)若直线l与C交于A,B两点,且弦AB的中点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f40d5459e1385ab7d829ea96ca0b946.png)
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3卷引用:甘肃省庆阳市2022-2023学年高二上学期期末考试数学试题
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解题方法
2 . 求与椭圆
有公共焦点,且离心率
的双曲线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608d1a8669aa2426e12751dec3e96da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf225b4a29dc973d00c0d0dd76b45288.png)
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2020-12-05更新
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7卷引用:甘肃省天水市2020-2021学年高二上学期期末考试数学(文)试题
3 . 双曲线
与椭圆
有相同的焦点,直线
为
的一条渐近线,求双曲线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c763113a1fc48e8acc83787b8cd24eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cc81cfaccc00aa4b7139de5a35a102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2016-12-02更新
|
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3卷引用:甘肃省武威市凉州区2020-2021学年高二上学期期末考试数学(文科)试题