1 . 动点
与点
的距离和它到直线
的距离相等,记点
的轨迹为曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
的方程
(2)设点
,动点
在曲线
上运动时,
的最短距离为
,求
的值以及取到最小值时点
的坐标
(3)设
为曲线
的任意两点,满足
(
为原点),试问直线
是否恒过一个定点?如果是,求出定点坐标;如果不是,说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42502a5730e1930d77d7100d1e34707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6719eb845f8667a550a72149e17670fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2346716598b3fbdaa456c43becb01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008e77135f850cd4beab452480a591d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5425108c557f0f21474c045334f97d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28fef30d1a298214a5c9ef1b4822d429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
您最近一年使用:0次
名校
2 . 已知曲线
上每一点到点
的距离比它到
轴距离大1,求曲线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462962496dae8e7eb749bf6ec3af1a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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3 . 直角坐标系中,已知动点
到定点
的距离与它到
距离之差为1,
(1)求点P的轨迹C
(2)点
,P在曲线C上,求
的最小值,并求此时点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df80e89c0e6b9c87ec0af6e9209c23d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
(1)求点P的轨迹C
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50edfb9ed0d50d6f35ad6a130208d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508734095955bb96d52f37be4e681700.png)
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名校
解题方法
4 . 设抛物线
的焦点为F,经过x轴正半轴上
点的直线l交于不同的两点A和B.
(1)若
,求点A的坐标;
(2)若
,求证:
为钝角;
(3)若
,且直线
,
与
有且只有一个公共点E,问:
的面积是否存在最小值?若存在,求出最小值,并求出M点的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d41bd21b19b7e1ba41d904104a9229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8649ce18c628d0e03e72cef541f8284f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883c12dfd7d11792e1f28910ef218818.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bd38527cb3dc281fb4750116c8b9fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73167471b003bb245bdc952d1a36e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49830e1af740638d68a1c06379e4ae04.png)
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名校
解题方法
5 . 在平面直角坐标系中,
为坐标原点,已知曲线
上任意一点
(其中
)到定点
的距离比它到
轴的距离大1.
(1)求曲线
的轨迹方程;
(2)若过点
的直线
与曲线
相交于A、B不同的两点,求
的值;
(3)若曲线
上不同的两点
、
满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0358749f8956dc713a94c71ebfbb4348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec9ff3d82ba1c5f4bf4d217371ddee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a389d5a4c111858d595f8e3781baac65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a389d5a4c111858d595f8e3781baac65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525a5bbe51ff7f161be5164ca0b36efe.png)
(3)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f94fb2983e92d638bca1ad6cb62e678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfd95b3c6f9f2d1818020cdc417e81d.png)
您最近一年使用:0次
2016-12-04更新
|
490次组卷
|
5卷引用:上海市嘉定区封浜高级中学2019-2020学年高二下学期期末数学试题
上海市嘉定区封浜高级中学2019-2020学年高二下学期期末数学试题(已下线)上海期末真题精选50题(大题提升版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)2015-2016学年河北冀州中学高二上第三次月考理科数学卷2015-2016学年河北省望都中学高二12月月考理科数学试卷黑龙江省哈尔滨市第六中学2021届高三二模数学(理科)试题
6 . 如图,平面上定点
到定直线
的距离
,
为该平面上的动点,过
作直线
的垂线,垂足为
,且
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/658f0f30-5760-46af-b277-9615d1602b5c.png?resizew=185)
(1)试建立适当的平面直角坐标系,求动点
的轨迹
的方程;
(2)过点
的直线交轨迹
于
、
两点,交直线
于点
,已知
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c62679db7ce8994f4d1a9d6d60e97fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/e48092de73206fcd11c64e761a9a26ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/658f0f30-5760-46af-b277-9615d1602b5c.png?resizew=185)
(1)试建立适当的平面直角坐标系,求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cd33e784ce7f5ce0ce07e027dbcc03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d8a10a87644d8e9cf598835f50edb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32705e629d8b9187b53efeee6605af15.png)
您最近一年使用:0次
解题方法
7 . 已知动圆过定点
,且与定直线
相切,点C在
上.
(1)求动圆圆心M的轨迹的方程;
(2)若过点P且斜率为
的直线与曲线M相交于A、B两点,问:
能否为正三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求动圆圆心M的轨迹的方程;
(2)若过点P且斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47153fdd73c0661fa460130082e30929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2012·上海长宁·二模
8 . 设抛物线
的焦点为
,过
且垂直于
轴的直线与抛物线交于
两点,已知
.
(1)求抛物线
的方程;
(2)设
,过点
作方向向量为
的直线与抛物线
相交于
两点,求使
为钝角时实数
的取值范围;
(3)①对给定的定点
,过
作直线与抛物线
相交于
两点,问是否存在一条垂直于
轴的直线与以线段
为直径的圆始终相切?若存在,请求出这条直线;若不存在,请说明理由.
②对
,过
作直线与抛物线
相交于
两点,问是否存在一条垂直于
轴的直线与以线段
为直径的圆始终相切?(只要求写出结论,不需用证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5ec49789b5313a602706e0ffe67a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2012/6/28/1570903897178112/1570903902568448/STEM/f311ab4627564b46ab60ef418f878744.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea1e00d2981160ba61a036681bef70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de23a5e7a4949034db018857c11cc6c.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8aa5c24766744e194574d31ca534c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c728334a9352ba1c820509532dc37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae57d518ebd02b9c3f888ba8348ad970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9184769fa5ffff059239f963e2a5ac4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)①对给定的定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4710e203c36ceafbfde7e9568ea7ac71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
②对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9732bfb7e9cc508df1936f93a5afb0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://img.xkw.com/dksih/QBM/2012/6/28/1570903897178112/1570903902568448/STEM/f311ab4627564b46ab60ef418f878744.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
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12-13高二上·上海·期末
9 . 已知曲线
在
轴右边,
上每一点到点
的距离减去它到
轴距离的差是1.
(Ⅰ)求曲线
的方程;
(Ⅱ)过点
的直线
与
相交于
两点,点
关于
轴的对称点为
,证明:点
在直线
上;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5ca48ce0b513465d3092154badd9ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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10-11高二下·上海·期末
10 . 已知动圆过定点P(1,0),且与定直线l:x=﹣1相切.
(1)求动圆圆心的轨迹M的方程;
(2)设过点P,且倾斜角为120°的直线与曲线M相交于A,B两点,A,B在直线l上的射影是A1,B1.
①求梯形AA1B1B的面积;
②若点C是线段A1B1上的动点,当△ABC为直角三角形时,求点C的坐标.
(1)求动圆圆心的轨迹M的方程;
(2)设过点P,且倾斜角为120°的直线与曲线M相交于A,B两点,A,B在直线l上的射影是A1,B1.
①求梯形AA1B1B的面积;
②若点C是线段A1B1上的动点,当△ABC为直角三角形时,求点C的坐标.
您最近一年使用:0次