名校
解题方法
1 . 已知抛物线
的焦点为
,
点为抛物线上任意一点,
为圆
上任意一点,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1ba86ffc6e5542b62319848c14acaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b19f5023332d84beda4d5967f78846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a5d27f50165678aefdad0adbea293.png)
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2 . 已知抛物线
过点
,则拋物线
的准线方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeea15cfe0f08d6fafadc8fabec4d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b73cbe595a76418351f6675a8cb32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2024-02-12更新
|
510次组卷
|
3卷引用:重庆市杨家坪中学2023-2024学年高三下学期第二次月考数学试题
名校
3 . 设点
,抛物线
上的点
到
轴的距离为
,若
的最小值为4,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4eea0c005a2c751eae7435686b588da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84edb5a4080b154bf8393308401e97f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.6 | B.10 | C.12 | D.16 |
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4 . 已知点
满足
,则点
的轨迹为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385288babdd85a5e1f2fc092943e899a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.椭圆 | B.双曲线 | C.抛物线 | D.圆 |
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2024-02-05更新
|
595次组卷
|
3卷引用:重庆市巴蜀中学校2023-2024学年高二上学期期末考试数学试题
重庆市巴蜀中学校2023-2024学年高二上学期期末考试数学试题重庆市渝中区巴蜀中学校2023-2024学年高二上学期期末数学试题(已下线)3.3.1 抛物线及其标准方程【第二练】“上好三节课,做好三套题“高中数学素养晋级之路
解题方法
5 . 设
为抛物线
的焦点,
是抛物线
的准线与
轴的交点,
是抛物线
上一点,当
轴时,
.
(1)求抛物线
的方程.
(2)
的延长线与
的交点为
,
的延长线与
的交点为
,点
在
与
之间.
(i)证明:
,
两点关于
轴对称.
(ii)记
的面积为
,
的面积为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3baa6d3cf25af55055fb8e1c4dcccd91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323232ab36943d1d5d2831d70ffcff87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a780261d7c91ccf6b5dc0f580146b1a4.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.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/bd33764ff4efddfe11a98a609753715c.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(i)证明:
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
(ii)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0c85deb80d8e63bc60127e803f7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d4c08ed526b54460c4d6fda1c11b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d7df4d3cf520d9d9355394c0a884bb.png)
您最近一年使用:0次
2024-02-05更新
|
525次组卷
|
3卷引用:重庆市缙云教育联盟2024届高三下学期3月月度质量检测数学试题
解题方法
6 . 已知抛物线
的准线为
,焦点为
,过点
的直线与抛物线交于
两点,
于
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1325c6fe42a9e5c04520d8a9bb6821b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab6ec340ab61281374c7fc22cd35cdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
A.以![]() ![]() |
B.若![]() ![]() |
C.设![]() ![]() |
D.过点![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 已知抛物线
的焦点为
,过点
的直线交抛物线
于
两点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.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/78f8c5a4ba073d03d2951a8ca63a04b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
您最近一年使用:0次
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8 . 某学习小组研究一种卫星接收天线(如图①所示),发现其曲面与轴截面的交线为抛物线,在轴截面内的卫星波束呈近似平行状态射入形为抛物线的接收天线,经反射聚焦到焦点处(如图②所示). 已知接收天线的口径(直径)为
,深度为
,则该抛物线的焦点到顶点的距离为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/ae6ae47b-0a24-4fff-b5db-5cc41f4d6986.png?resizew=208)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a637e8f4e368c079616955509b1717e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29be23f689eb01e57963495377501257.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/ae6ae47b-0a24-4fff-b5db-5cc41f4d6986.png?resizew=208)
A.0.9 | B.![]() | C.1.2 | D.1.05 |
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9 . 已知抛物线
过点
,过点
作直线
与抛物线
交于不同的两点
,过点
作
轴的垂线分别与直线
交于点
,其中
为原点.
(1)求抛物线
的方程,并求其焦点坐标和准线方程;
(2)证明:
为线段
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2106aa0e7563fe875d14d46f7c6d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530e5817131adf2c05b99ff18eb9060f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.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/69dab01a58b85d89a604ac74fee07f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
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10 . 已知抛物线
过点
.
(1)求抛物线
的标准方程及准线方程;
(2)过焦点
的直线
与抛物线
相交于
,
两点,再从条件①、条件②中选择一个作为已知,求
的长.
条件①:直线
的斜率为2;
条件②:线段AB的中点为
.
注:如果选择条件①和条件②分别作答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f360246d78db95b642b56a39bced7d24.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过焦点
![](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/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/aaff41080fdea43eea7efedf9ebc1498.png)
条件①:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
条件②:线段AB的中点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8beda67ed0d77ad6cf614eb822445ee7.png)
注:如果选择条件①和条件②分别作答,按第一个解答计分.
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