10-11高三·江西吉安·阶段练习
1 . 已知向量
,O是坐标原点,动点P满足:
.
(Ⅰ)求动点P的轨迹;
(Ⅱ)设B、C是点P的轨迹上不同两点,满足
,在x轴上是否存在点A(m,0),使得
,若存在,求出实数m的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928922766f09132b9bcc48c4fbda5997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac77d133718d1e769c8aaf6b52252af.png)
(Ⅰ)求动点P的轨迹;
(Ⅱ)设B、C是点P的轨迹上不同两点,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f577e79285314a2bccff71cf56f70a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4145c0fc69cd40771b078e6b732336.png)
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10-11高三·江西·阶段练习
解题方法
2 . 已知抛物线
的准线为
,焦点为
,圆
的圆心在
轴的正半轴上,且与
轴相切,过原点
作倾斜角为
的直线
,交
于点A,交圆
于另一点
,且
.
![](https://img.xkw.com/dksih/QBM/2011/10/24/1570329723985920/1570329729474560/STEM/850bc43b48df4decbd905ccbc9f3c2c9.png?resizew=189)
(1)求圆
和抛物线C的方程;
(2)若
为抛物线C上的动点,求
的最小值;
(3)过
上的动点Q向圆
作切线,切点为S,T.求证:直线ST恒过一个定点,并求该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcd0dc22d8b855060ad4a1e6c5f4c44.png)
![](https://img.xkw.com/dksih/QBM/2011/10/24/1570329723985920/1570329729474560/STEM/850bc43b48df4decbd905ccbc9f3c2c9.png?resizew=189)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0c38d30b3baee8e9b04b719377a6bf.png)
(3)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2011·江西南昌·三模
3 . 已知抛物线L:x2=2py(p>0)和点M(2,2),若抛物线L上存在不同的两点A、B满足
.
(1)求实数p的取值范围;
(2)当p=2时,抛物线L上是否存在异于A、B的点C,使得经过A、B、C三点的圆和抛物线L在点C处有相同的切线?若存在,求出点C的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd4976e151e53b2b65ef2277eeaac07.png)
(1)求实数p的取值范围;
(2)当p=2时,抛物线L上是否存在异于A、B的点C,使得经过A、B、C三点的圆和抛物线L在点C处有相同的切线?若存在,求出点C的坐标;若不存在,请说明理由.
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2011·江西赣州·一模
4 . 已知
是抛物线![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/b6dc3357c2894f7abe06028ee39e35ff.png)
上两动点,直线
分别是抛物线
在点
处的切线,且
,
.
(1)求点
的纵坐标;
(2)直线
是否经过一定点?试证之;
(3)求
的面积的最小值
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/4ebb53d1af0349c886ea0f4b445ec967.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/b6dc3357c2894f7abe06028ee39e35ff.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/7fe0ed6f65414b59a717a8a1444deb57.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/e1161e2b055b462393c6f346135103bd.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/ba5568136f404a0db9b21f1158012836.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/4ebb53d1af0349c886ea0f4b445ec967.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/b9a735d49d3643b9b3a7a2711bbb3e6c.png)
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/e81bb0e45ef84b4d98bfd290ec547de6.png)
(1)求点
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/75c1f6fadb43460982bc703b03304cf5.png)
(2)直线
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/e79d1fb7dbbe4a35af0c1aa55a8777d7.png)
(3)求
![](https://img.xkw.com/dksih/QBM/2011/5/30/1570227377414144/1570227382910976/STEM/0599f53e961443dcbc7ce8b08459d4db.png)
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2011·江西抚州·一模
解题方法
5 . 设点
(
为正常数),点
在
轴的负半轴上,点
在
轴上,且
,
.
(1)当点
在
轴上运动时,求点
的轨迹
的方程;
(2)直线
过点
且与曲线
相交于不同两点
,分别过点
作直线
:
的垂线,对应的垂足分别为
,求
的值;
(3)在(2)的条件下,记
,
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6d06b9a4d3a891ea7c986b1ab4e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab91fd1816600a17d829fc4ab0ae9adb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce27c929307126dd297750489f8f6b5f.png)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64b91d079810d968b9ef63e3284c7af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8454989732716850cb57ca15f8ef596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e43a5a9795e6e6dc7a285fbbb1a5c1.png)
(3)在(2)的条件下,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7c68152bd62167d7341de115070baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e994bd349fb9e2d725b94b98a9ff1dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d455c79b82683dea96e80dc41620e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06855991a9333bfdfbe2b06adfa6e464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2010·山东枣庄·一模
6 . 抛物线D以双曲线
的焦点
为焦点.
(1)求抛物线D的标准方程;
(2)过直线
上的动点P作抛物线D的两条切线,切点为A,B.求证:直线AB过定点Q,并求出Q的坐标;
(3)在(2)的条件下,若直线PQ交抛物线D于M,N两点,求证:|PM|·|QN|=|QM|·|PN|
![](https://img.xkw.com/dksih/QBM/2011/3/25/1570065880121344/1570065885429760/STEM/42de1d3b68de41338fa8df45ef86888f.png)
![](https://img.xkw.com/dksih/QBM/2011/3/25/1570065880121344/1570065885429760/STEM/8736f5550e394dffb878ecbcf8302ffd.png)
(1)求抛物线D的标准方程;
(2)过直线
![](https://img.xkw.com/dksih/QBM/2011/3/25/1570065880121344/1570065885429760/STEM/347c61a7967b426cafb318129cf55d75.png)
(3)在(2)的条件下,若直线PQ交抛物线D于M,N两点,求证:|PM|·|QN|=|QM|·|PN|
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真题
7 . 已知抛物线
和三个点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292884c8998d7924591a6f2787ce1596.png)
,过点
的一条直线交抛物线于
、
两点,
的延长线分别交曲线
于
.
(1)证明
三点共线;
(2)如果
、
、
、
四点共线,问:是否存在
,使以线段
为直径的圆与抛物线有异于
、
的交点?如果存在,求出
的取值范围,并求出该交点到直线
的距离;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292884c8998d7924591a6f2787ce1596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21058e511e1aeb0330048ad6cad1d434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/6acf9e2f45e625cbc6d26dd5e292edd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab9714629add1e70f61b92da2736708.png)
(2)如果
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/6508f32f-e384-4412-a520-e56654a8c04b.png?resizew=199)
您最近一年使用:0次
2016-11-30更新
|
1442次组卷
|
2卷引用:2008年普通高等学校招生全国统一考试数学文科(江西卷)
8 . 过抛物线
(
>0)的焦点F作一直线交抛物线于P、Q两点,若线段PF与FQ的长分别为p、q,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://img.xkw.com/dksih/QBM/2012/3/16/1570806189219840/1570806194569216/STEM/682cbd91aa8d4e34a2d258401f5990e7.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9803230c689be05892258f5663b66938.png)
A.2![]() | B.![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
2011-05-19更新
|
5667次组卷
|
15卷引用:【全国百强校】江西省南昌市第二中学2018-2019学年高二上学期期中考试数学(文)试题
【全国百强校】江西省南昌市第二中学2018-2019学年高二上学期期中考试数学(文)试题(已下线)2010-2011学年安徽省师大附中高二下学期期中考查数学卷(已下线)2010-2011学年福建省南靖一中高二文科上学期期末考试试卷2000年普通高等学校招生考试数学试题(广东卷)2000年普通高等学校招生考试数学(文)试题(新课程卷)2000年普通高等学校招生考试数学(理)试题(旧课程卷)2000年普通高等学校招生考试数学(理)试题(新课程卷)2000年普通高等学校招生考试数学(文)试题(旧课程卷)(已下线)专题10 焦半径公式的应用 微点2 焦半径公式的应用综合训练(已下线)专题9 圆锥曲线第二定义的应用 微点3 圆锥曲线第二定义的应用综合训练(已下线)专题21 抛物线的焦点弦 微点1 抛物线的焦点弦常用结论及其应用(已下线)专题20 圆锥曲线的通径及其应用 微点1 圆锥曲线的通径及其应用(已下线)第三讲:特殊与一般思想【讲】 高三清北学霸150分晋级必备(已下线)3.3.2 抛物线的简单几何性质【第三课】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)专题17 圆锥曲线常考压轴小题全归类(16大题型)(练习)