已知等轴双曲线
的对称轴都在坐标轴上,并且经过点
,求双曲线
的标准方程、离心率、实轴长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6300e1ebe1e6b8ee9743e2da16f02f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
更新时间:2024-01-26 06:41:59
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【推荐1】等轴双曲线过点
.
(1)求双曲线的标准方程;
(2)求该双曲线的离心率和焦点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a3dd9c30cb2f6124b0c4119e8a334f0.png)
(1)求双曲线的标准方程;
(2)求该双曲线的离心率和焦点坐标.
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【推荐2】回答下列问题:
(1)抛物线的顶点在原点,焦点在
轴上,抛物线上一点
到焦点的距离为4,求抛物线的标准方程;
(2)双曲线
的左、右焦点分别为
、
,
是双曲线右支上一点,且
,求双曲线
的标准方程.
(1)抛物线的顶点在原点,焦点在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae325fb1fe6c8a7183cec6dc6be49457.png)
(2)双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0594fab09bb81e6ed6e3874b5454f43a.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/40a044fa276080e9b50cd25dc886d948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f255fd5edbb5ce233f621662de18091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐3】求适合下列条件的曲线方程:
(1)与椭圆
有相同的焦点,且过点
的椭圆的标准方程;
(2)渐近线方程为
,经过点
双曲线的标准方程.
(1)与椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6205da5e1d2730ee0b3de8bca3e29f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a82ea445270fc38d717c43e99fc217.png)
(2)渐近线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dec7f6309562276a49560c17c98dedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
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【推荐1】已知双曲线
的两个焦点为
, 且过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899465452adfdb5662bf4648db979f27.png)
(1)求双曲线
的虚半轴长;
(2)求与求双曲线
有相同的渐近线, 且过点
的双曲线的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4bd4beb4101b43ef0dacbd85c63154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10f5be271d5e18347e2792d348e5411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899465452adfdb5662bf4648db979f27.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求与求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577620a3b886932bbcf2f2f3dd725d87.png)
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【推荐2】求下列双曲线的实轴和虚轴的长、顶点和焦点的坐标以及离心率:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01411606d53948300d1d18b2934772b5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0df3d6f2c87f000d93b1a424d3c561.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd141be6b787039663913494d98cab4.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42da4f488110e7b62014cc3a8f22f165.png)
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【推荐1】(1)已知抛物线
的焦点为
,设过焦点
且倾斜角为
的直线
交抛物线于
两点,求线段
的长.
(2)已知
是双曲线C的两个焦点,P为C上一点,且
,求双曲线C的离心率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5422d30b6a57b62a12de8a2a978edb9.png)
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【推荐2】已知双曲线
的方程为
,直线
.
(1)求双曲线
的渐近线方程、离心率;
(2)若直线
与双曲线
仅有一个公共点,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a218602e8e3a52f74f760059aa7014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffecff6a416ff88fa84767c40919f1b8.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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