1 . 已知抛物线
的焦点为
,点
,
在抛物线上,若
的重心
的横坐标为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248f9bb8dd23ab0fa70e774678d91641.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-12-13更新
|
1237次组卷
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5卷引用:“皖豫名校联盟体”2021-2022学年高三上学期第二次考试文科数学试题
2 . 已知点
是抛物线
上一动点,现有下列四个命题:①
的焦点坐标为
;②
的准线方程为
;③
;④
的最小值为
.其中所有真命题的编号是__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fa7155f6858a570e8dee2495822a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cbe0f54958ff4629a59bcdc78691bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4c1c98a9119830498fde7bfc952be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
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3 . 抛物线
的焦点与双曲线
的右焦点
重合,
是双曲线的左焦点,两曲线交于
两点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7500ef700f2ce5558959aa3fa536a72d.png)
A.![]() | B.2 | C.![]() | D.![]() |
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解题方法
4 . 如图,过抛物线
的焦点
的直线
交抛物线于点
、
,交其准线于点
,若
,且
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/29/2861716979326976/2870308988936192/STEM/804c658293aa4db9a3135b0e7b2e0a75.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](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/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/7d672a56cac906638722a0db3658472e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58acf95344d6e5759cb2e05a6e61a151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://img.xkw.com/dksih/QBM/2021/11/29/2861716979326976/2870308988936192/STEM/804c658293aa4db9a3135b0e7b2e0a75.png?resizew=158)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:安徽省亳州市涡阳第—中学2021-2022学年高二上学期第二次教学质量检测数学试题
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解题方法
5 . 已知抛物线
上一点
到焦点的距离为3,准线为l,若l与双曲线
的两条渐近线所围成的三角形面积为
,则双曲线C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee73294987312155754dd9f6c007dba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
A.3 | B.![]() | C.![]() | D.![]() |
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12卷引用:湖南省炎德英才2022届高三上学期12月联考数学试题
湖南省炎德英才2022届高三上学期12月联考数学试题重庆市南开中学2022届高三上学期12月月考数学试题山西省太原市太原师范学院附属中学、师苑中学2021-2022学年高二上学期12月月考数学试题湖南省名校联合体2021-2022学年高三上学期12月联考数学试题湖南师范大学附属中学2021-2022学年高三上学期12月联考数学试题天津市宝坻区大口屯高级中学2021-2022学年高三上学期第二次月考数学试题天津市新华中学2022届高三下学期2月线上统练数学试题天津市和平区2021-2022学年高三上学期期末数学试题陕西省咸阳市2021-2022学年高二上学期期末文科数学试题天津市河西区2022届高三下学期总复习质量调查(二)数学试题天津市河西区2022届高三下学期二模数学试题云南省曲靖市第二中学2021-2022学年高二上学期期末数学试题
名校
解题方法
6 . 已知抛物线
的焦点为
,
,
是抛物线上两个不同的点,若
,则线段
的中点到
轴的距离为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ad5a1b4172f7bff797b13ad3a14757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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3卷引用:吉林省长春市第二十九中学2021-2022学年高二上学期10月月考数学试题
吉林省长春市第二十九中学2021-2022学年高二上学期10月月考数学试题(已下线)第七节 抛物线 第一课时 抛物线的定义、方程与性质 讲吉林省辽源市田家炳高中友好学校(第七十六届)2023-2024学年高二上学期1月期末联考数学试题
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7 . 若点
是抛物线
的焦点,点
在抛物线上,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f25ac4b6716439a1576efaf43a33a78.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905fafa9e2152430fa6ece7825abaa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083bb5257ef5fa39810f4012297772e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f25ac4b6716439a1576efaf43a33a78.png)
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8 . 已知点F为抛物线C:
的焦点,点
,若点Р为抛物线C上的动点,当
取得最大值时,点P恰好在以F,
为焦点的椭圆上,则该椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba00d7ffc72c2fb557febfac39b73f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd3764aeac5457766d1c41ef06cfb6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:重庆市杨家坪中学2022届高三上学期12月月考数学试题
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9 . 若抛物线C:
(
)上的一点
到它的焦点的距离为6,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4cc9a688ccbd7e7f8c81dac27ac193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.4 | B.6 | C.8 | D.10 |
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3卷引用:辽宁省葫芦岛市协作校2021-2022学年高二上学期第二次考试数学试题
10 . 抛物线
的焦点为
,第一象限的点
在
上,且
,则
的坐标是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a2d4945049c5a8f525f18763eba91.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d809908ded673fd9f769c6a36c02a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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