已知双曲线
1(0<a<b)的实轴长为4,截直线y=x﹣2所得弦长为20
.求:
(1)双曲线的方程;
(2)渐近线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81dec75c2828af9e7f4dbf12266b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)双曲线的方程;
(2)渐近线方程.
2021高二·全国·专题练习 查看更多[1]
(已下线)专题3.9 直线与双曲线的位置关系-重难点题型精讲-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)
更新时间:2022-04-07 21:49:02
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【推荐1】已知方程
表示双曲线
(1)求实数m 的取值范围;
(2)当m=2时,求双曲线的焦点到渐近线的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f615d3a6ce9c8cadb84576da1e2fb47a.png)
(1)求实数m 的取值范围;
(2)当m=2时,求双曲线的焦点到渐近线的距离.
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【推荐2】已知双曲线的中心在原点
,右焦点为
,
是双曲线右支上一点,且
的面积为
.
(1)若点
的坐标为
,求此双曲线的渐近线方程;
(2)若
,当
取得最小值时,求此双曲线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24550b13dbecf7d86c7054250e987274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0942fc5e4da4ae86721efc5bb7e2cfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7a55f5bf051cfdfba52c4b18c0c12d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf34ed2c3a6f34e22787c10e6502b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0043d442fc7bd9177c2e3716d3d762.png)
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【推荐1】已知双曲线过点
和点
.
(1)求双曲线的离心率;
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](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/ba7b6aa801fc7aafe2655d74cafa4654.png)
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【推荐2】本题共有3个小题,第1小题满分3分,第2小题满分6分,
第3小题满分7分.
已知双曲线
.
(1)求双曲线
的渐近线方程;
(2)已知点
的坐标为
.设
是双曲线
上的点,
是点
关于原点的对称点.
记
.求
的取值范围;
(3)已知点
的坐标分别为
,
为双曲线
上在第一象限内的点.记
为经过原点与点
的直线,
为
截直线
所得线段的长.试将
表示为直线
的斜率
的函数.
第3小题满分7分.
已知双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ea6b8af915da89bfba8e9f7926ee57.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd9ed56a777ce5784152474ea25d0e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f04088e287a56bd4fe6204db3b6ca90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fffd330dd6b9241659d790bd2a7fb2.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340f4c30692c935c6fb48ac4b1327321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab1681cc139e108dd5ee4beb5dc7000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
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