1 . 已知直线
,点
,点
是平面直角坐标系内的动点,且点
到直线
的距离是点
到点
的距离的2倍.记动点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)过点
的直线
与曲线
交于
、
两点,若
(
是坐标系原点)的面积为
,求直线
的方程;
(3)若(2)中过点
的直线
是倾斜角不为0的任意直线,仍记
与曲线
的交点为
、
,设点
为线段
的中点,直线
与直线
交于点
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04297423a4dd57fbfa9cb111fb525108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055a2ef09e2ee0948cf67c58de58732d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca538a6d20cb578bd6d23ad843d7c32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a621cc60e631e0174f2f8089e69b546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(3)若(2)中过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2997a1f93e64edb331481b5a1f7fdbeb.png)
您最近一年使用:0次
2 . 在平面直角坐标系中,定义
为两点
,
的“切比雪夫距离”,又设点
及
上任意一点
,称
的最小值为点
到直线
的“切比雪夫距离”,记作
,给出下列三个命题:
①对任意三点
、
、
,都有
;
②已知点
和直线
:
,则
;
③到定点
的距离和到
的“切比雪夫距离”相等的点的轨迹是正方形.
其中正确的命题有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a7ccf5858c4bee028cd4f0c7a8537f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32286c3865f06865920816e7685c497a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ab04028bf648fbb8c9296acdeaaf5a.png)
①对任意三点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efc72de5cceb54c6959af52491ca762.png)
②已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae104d6d67d114b588a5680b124b0e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0947dc8f5ba116aaf3239d66adc7474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0104da8625fcd6af63b19a37274a40.png)
③到定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
其中正确的命题有( )
A.0个 | B.1个 | C.2个 | D.3个 |
您最近一年使用:0次
2020-02-10更新
|
1780次组卷
|
5卷引用:湖北省襄阳市2019-2020学年高二上学期期末数学试题
湖北省襄阳市2019-2020学年高二上学期期末数学试题(已下线)专题05 解析几何(第一篇)-备战2020高考数学黄金30题系列之压轴题(新课标版)2020届重庆市名校联盟高三二诊数学(理)试题(已下线)专题19 切比雪夫(已下线)第五篇 向量与几何 专题19 抽象距离 微点4 抽象距离综合训练
名校
3 . 如图,圆
与直线
相切于点
,与
正半轴交于点
,与直线
在第一象限的交点为
. 点
为圆
上任一点,且满足
,以
为坐标的动点
的轨迹记为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/f242e29e-3555-4909-bb3d-132d5f42e779.png?resizew=211)
(1)求圆
的方程及曲线
的方程;
(2)若两条直线
和
分别交曲线
于点
和
,求四边形
面积的最大值,并求此时的
的值.
(3)已知曲线
的轨迹为椭圆,研究曲线
的对称性,并求椭圆
的焦点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6912940c64a0bdb698c9af82fd2b7600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cc81cfaccc00aa4b7139de5a35a102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2613017de2e76bf8dd10295de827ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2252c40c265da6174adf8c90b11dfe54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4e5bf2fc46de6d148602f505614c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/f242e29e-3555-4909-bb3d-132d5f42e779.png?resizew=211)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)若两条直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4a45e79f51c7b5a9428f4cf2ab5c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41391e94da14cb86ba53a35b3c09a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a270ec7e23fc0cc1d4b04bf1d22184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)已知曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
您最近一年使用:0次
名校
4 . 如图,圆
与直线
相切于点
,与
正半轴交于点
,与直线
在第一象限的交点为
.点
为圆
上任一点,且满足
,以
为坐标的动点
的轨迹记为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/1ddfd004-c352-48bf-a123-2ee693682921.png?resizew=196)
(1)求圆
的方程及曲线
的方程;
(2)若两条直线
和
分别交曲线
于点
和
,求四边形
面积的最大值,并求此时的
的值.
(3)根据曲线
的方程,研究曲线
的对称性,并证明曲线
为椭圆.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6912940c64a0bdb698c9af82fd2b7600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cc81cfaccc00aa4b7139de5a35a102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2613017de2e76bf8dd10295de827ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2252c40c265da6174adf8c90b11dfe54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4e5bf2fc46de6d148602f505614c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/1ddfd004-c352-48bf-a123-2ee693682921.png?resizew=196)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)若两条直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4a45e79f51c7b5a9428f4cf2ab5c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41391e94da14cb86ba53a35b3c09a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a270ec7e23fc0cc1d4b04bf1d22184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)根据曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
您最近一年使用:0次
名校
5 . 设点
,
的坐标分别为
,
,直线
和
相交于点
,且
和
的斜率之差是1.
(1)求点
的轨迹
的方程;
(2)过轨迹
上的点
,
,作圆
:
的两条切线,分别交
轴于点
,
.当
的面积最小时,求
的值.
![](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/20aa36cae34afaa391a4319c9c5eb87a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5d6302ecf72deec944819277cf9b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2752e086b85f9fbb95010bf771072af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b85cff2e7da43d5f1f9a8bd6cde29022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b63af296fafc50c28e75e34bee1f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a62fe60eef08b3339f4d205672b7029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
您最近一年使用:0次
名校
6 . 已知椭圆
的两焦点分别为
,
,
是椭圆在第一象限内的一点,并满足
,过
作倾斜角互补的两直线
、
分别交椭圆于
、
两点.
(1)求
点坐标;
(2)当直线
经过点
时,求直线
的方程;
(3)求证直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03752bb01ac43b8f3b7d3e240da1fbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da61a8fc8f424929e9bf36622f1ca74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)求证直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-01-09更新
|
645次组卷
|
2卷引用:上海市华东师大一附中2017-2018学年高二上学期期末数学试题
7 . 在平面直线坐标系中,定义
为两点
的“切比雪夫距离”,又设点P及
上任意一点Q,称
的最小值为点P到直线
的“切比雪夫距离”记作
给出下列四个命题:( )
①对任意三点A、B、C,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccc74eeda89291f3028afe22a755e77.png)
②已知点P(3,1)和直线
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be025ade9928f2131b2641fa67a829ba.png)
③到原点的“切比雪夫距离”等于
的点的轨迹是正方形;
④定点
动点
满足
则点P的轨迹与直线
(
为常数)有且仅有2个公共点.
其中真命题的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6681dbde777da64b241657f1583c291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926101582b7fd6705b0deecc69be8d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d86b44efe79ae42b7dbafc9ae3b0f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a7d83fe76439c85ea934f92a3e0a2a.png)
①对任意三点A、B、C,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccc74eeda89291f3028afe22a755e77.png)
②已知点P(3,1)和直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b035a1eb6289e88b090edccc2ef650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be025ade9928f2131b2641fa67a829ba.png)
③到原点的“切比雪夫距离”等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
④定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a31cca4844469b38624867a4a4a746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/379051d5400af1d76194365a687c98f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e650e788c03476266f6dd4b14550ffa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead6a3dbd03539ef5e0807be57bb1e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
其中真命题的个数是( )
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
2019-12-09更新
|
3359次组卷
|
6卷引用:上海市建平中学2018-2019学年高二上学期12月月考数学试题
上海市建平中学2018-2019学年高二上学期12月月考数学试题(已下线)专题19 切比雪夫(已下线)第二篇 函数与导数专题5 切比雪夫、帕德逼近 微点3 切比雪夫函数与切比雪夫不等式(已下线)第五篇 向量与几何 专题19 抽象距离 微点4 抽象距离综合训练(已下线)重难点突破03 直线与圆的综合应用(七大题型)(已下线)专题04 直线方程综合应用难题(12题型)-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)
8 . 已知等轴双曲线
的两个焦点
、
在直线
上,线段
的中点是坐标原点,且双曲线经过点
.
(1)若已知下列所给的三个方程中有一个是等轴双曲线
的方程:①
;②
;③
.请推理判断哪个是等轴双曲线
的方程,并求出此双曲线的实轴长;
(2)现要在等轴双曲线
上选一处
建一座码头,向
、
两地转运货物.经测算,从
到
、从
到
修建公路的费用都是每单位长度
万元,则码头应建在何处,才能使修建两条公路的总费用最低?
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa6b27b6442cafd26eaa354c45bd857.png)
(1)若已知下列所给的三个方程中有一个是等轴双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a029973b0a9a84e9379ddba2320144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/872be4645b9ccafc2744f8c822d17005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb0a261f1154a9bda6a29a42c5408ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)现要在等轴双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c53c2ce5532642de107e0d85c75f3e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b285bf0ab7b964dd271e6effec7ba6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-12-07更新
|
485次组卷
|
2卷引用:上海市市北中学2018-2019学年高二上学期期末数学试题
名校
9 . 如图所示,正方体
的棱长为1,
分别是棱
的中点,过直线
的平面分别与棱
交于
,设
求:
![](https://img.xkw.com/dksih/QBM/2019/11/6/2328235043495936/2328591902277632/STEM/7fd14571-6498-4d6a-a27c-02f62b2eaf4f.png?resizew=251)
(1)求
与面
所成的角的大小;
(2)求四棱锥
的体积
并讨论它的单调性;
(3)若点
是正方体棱上一点,试证:满足
成立的点的个数为6.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebecdc0f0f815ff0083d85d3f539b36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b3c955fa0be5039141f46ee8e9a874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193308ab66f6d89298c5764079ff7706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c8a190d4efdbb560ce09945cef77fd.png)
![](https://img.xkw.com/dksih/QBM/2019/11/6/2328235043495936/2328591902277632/STEM/7fd14571-6498-4d6a-a27c-02f62b2eaf4f.png?resizew=251)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207fde4b813c3eadea10c023aa8d463e.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9676b0b48e4b05fad1fed46273ac63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b161756ce7d22dfe758c4cb784703aa3.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7416e05fbca7bf4f600a9b81c8f7eb2c.png)
您最近一年使用:0次
10 . 已知平面上的线段
及点
,任取
上一点
,线段
长度的最小值称为点
到线段
的距离,记作
.
(1)求点
到线段
(
)的距离
;
(2)设
是长为2的线段,求点的集合
所表示的图形面积;
(3)写出到两条线段
、
距离相等的点的集合
,其中
,
,
、
、
、
坐标分别是
、
、
、
,同时在直角坐标系下作出集合
应满足的图像.
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fb005483a774d04231b2904c05a15d.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797c488729678e74e0825c2e92b544b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6834ba6de422d87eedd475e419af10fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9d8f26bb5f53a17f9cd135255a194c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fb005483a774d04231b2904c05a15d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4357ea3c300e6f02e3fdf8d99e2a9e0.png)
(3)写出到两条线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87bc55b6324112631164b31cae1a10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9792659bdb65cc3136d1a96d8868fd3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b338a8c8993eaaaa53572fae7b97c6.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9ece4ff94b2b1c4cc7ee25000f996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/593be9f61fc0a4999d38a84b2ce89416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9336da1233975c8c4e8ace038c1a8b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
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