已知双曲线的顶点在x轴上,两顶点间的距离是2,离心率
.
(1)求双曲线的标准方程;
(2)若抛物线
的焦点F与该双曲线的一个焦点相同,点M为抛物线上一点,且
,求点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0276541c12707b24d2f06ea3d976cf7.png)
(1)求双曲线的标准方程;
(2)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d4a2a035d302744fed6f65daa4ac55.png)
更新时间:2023-01-05 14:44:10
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【推荐1】根据下列条件,求圆锥曲线的标准方程:
(1)焦点为
,
,离心率为
;
(2)焦点为
,
,离心率为3:
(3)抛物线的准线为
;
(4)椭圆与双曲线
有相同的焦点,且短轴长为2.
(1)焦点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(2)焦点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
(3)抛物线的准线为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a770a92929ebd7071a36a25a363c2a.png)
(4)椭圆与双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c477e5ade921ffa8377c4719319380ff.png)
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解题方法
【推荐2】如图所示,已知双曲线
与抛物线
有相同的焦点F,它们在第一象限内的交点为M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/b8290a61-b8aa-4371-97c1-321311317c86.png?resizew=153)
(1)写出抛物线
的焦点坐标和准线方程;
(2)若双曲线
的焦距为其实轴长的2倍,求点M到双曲线
两个焦点的距离之和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318874a31871355eb87e878ae35b71ad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/b8290a61-b8aa-4371-97c1-321311317c86.png?resizew=153)
(1)写出抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
(2)若双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
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【推荐1】求适合下列条件的抛物线的方程.
(1)焦点为
,准线方程为
;
(2)顶点在原点,准线方程为
;
(3)顶点在原点,以
轴为对称轴,过点
.
(1)焦点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354f7d6cb941bbcf2938689f3a4c67a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
(2)顶点在原点,准线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
(3)顶点在原点,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e584f799ea554fc5533925ead4672501.png)
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【推荐2】已知抛物线的顶点在原点,焦点在x轴的正半轴上,抛物线上的点
到焦点的距离等于5,求抛物线的方程和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53e8d5bce5404fec578e24b71301509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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