已知动点
在双曲线
上,双曲线
的左、右焦点分别为
,
,下列结论正确的是________ .
①双曲线
的渐近线与圆
相切
②满足
的点
共有
个
③直线
与双曲线的两支各有一个交点的充要条件是
④若
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b30352c43707c4e54b94ce5b61f2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
①双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fb58b3828f7f9a67032a7b1f052ad8.png)
②满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31251fac8146ae3e9d6611a5e54899c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018d29fbd23afb4c465c9c5c8fd42eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aca4b67db593faef9a79b1d0561913e.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b5a2d6c1edf7798c4ac7983404bafe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99ce280464c01dc7ff386c5b92bd1eb.png)
21-22高二下·江西新余·开学考试 查看更多[2]
更新时间:2022-03-16 10:59:02
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解题方法
【推荐1】已知椭圆
与双曲线
共焦点,F1、F2分别为左、右焦点,曲线
与
在第一象限交点为
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【推荐2】已知
,双曲线
的左、右焦点分别为
、
,点
在双曲线的右支上,且直线
的斜率为
.若
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__________ .
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【推荐1】在平面直角坐标系
中,过双曲线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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【推荐2】已知双曲线
的一个焦点到一条渐近线的距离为
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【推荐1】给出下列五个命题:
①已知直线
、
和平面
,若a
b,则
;
②双曲线
,则直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef7c2a877878794a822b815a57e3e91.png)
与双曲线有且只有一个公共点;
③若两个平面垂直,那么一个平面内与它们的交线不垂直的直线与另一个平面也不垂直;
④过
的直线
与椭圆
交于
、
两点,线段
中点为
,设直线
斜率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
,直线
的斜率为
,则
等于
.
其中,正确命题的序号为_______ .
①已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d07324ee4dec98ce18a2f37728791b.png)
②双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e0b8c81ac2e1f768c246208e2ca3ca.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abad909e0902a78436f29d6a755e2e1.png)
③若两个平面垂直,那么一个平面内与它们的交线不垂直的直线与另一个平面也不垂直;
④过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
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其中,正确命题的序号为
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【推荐2】已知两个点
和
,若直线上存在点
,使
,则称该直线为“
型直线”.给出下列直线:①
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;③
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.,其中为“
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