1 . 已知抛物线
的准线方程为
,焦点为
,点
是抛物线上的两点,抛物线在
两点的切线交于点
,则下列结论一定正确的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41edd4ff23f960f320ae1d4db1db423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefaa98d70b2b26f304917c45d3c72cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.抛物线的方程为:![]() |
B.![]() |
C.当直线![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2 . 已知抛物线
,其焦点为
.
(1)
两点为抛物线
上的动点且满足
,直线
不垂直于
轴,求证:线段
的垂直平分线过定点
,并求出点
的坐标;
(2)已知椭圆
,圆
,过(1)中点
作斜率分别为
的直线
,且满足
,直线
交椭圆
于
两点,直线
交圆
于
两点,点
为
中点,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4428756f1088ce78ed97cbcea99775f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302aab606cd719baba3de2574ed69457.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875a860a39f84b8e72083c4956b6cf15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)已知椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc5f7e05d956c36a2b75c9bc5e7a19f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ad174ec05373ce76b93130de6b3450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4cc51d393a94365f7008de5eae8879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42e9eac0fd00efb8da426b92feb37d4.png)
您最近一年使用:0次
3 . 对每个正整数
是抛物线
上的点,过焦点
的直线
交抛物线于另一点
.
(1)证明:
;
(2)取
,并记
,求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45e6c5320f1615e1288057c79c0dcdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e808c00d132c5833c3875b6274908f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3765f6f6b85240bc9b1a83697841a4.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0137c9fba1ab732a1d2f36a255a4fa9.png)
(2)取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116b0cb31f0d12ceaa50ec16af4aaf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ceb7355215ca64b1ab5eb3d0c119054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
4 . 已知抛物线
的焦点为
,过点
倾斜角为
的直线
交抛物线与
两点.点
在
轴上方,点
在
轴下方.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/8c2b10f3-0cf6-43bc-9988-81e797d2c5af.png?resizew=159)
(1)求证:
;
(2)若
,试求
的取值范围;
(3)如图,过焦点
作互相垂直的弦
,若
与
的面积之和最小值为32,求抛物线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa877db8dc1b03f1581106dfd5211ac4.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/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ebaa32f4f1f4f807ca9aeb7fb29951.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/8c2b10f3-0cf6-43bc-9988-81e797d2c5af.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d272d156ab8110bdd21ead74aad0ee6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ce877f1c5f2ffb17e10bec7e5869cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca17c81683a8bf4f8c143d41de298ea.png)
(3)如图,过焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947a9e717f8bd9e2f5eb3ba8929932a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
您最近一年使用:0次
5 . 已知抛物线
的焦点为
,过点
作直线
与抛物线
交于
两点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
A.线段![]() ![]() |
B.当直线![]() ![]() ![]() ![]() |
C.以线段![]() ![]() |
D.存在点![]() ![]() |
您最近一年使用:0次
2024-01-17更新
|
702次组卷
|
4卷引用:重庆市七校2023-2024学年高二上学期期末联考数学试题
名校
解题方法
6 . 已知
为抛物线
的焦点,过点
的直线
与抛物线
交于不同的两点
,
,抛物线在点
,
处的切线分别为
和
,若
和
交于点
.
(1)求证点P在一条定直线上.
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求证点P在一条定直线上.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d74b2e556a855ac9f145d305442884.png)
您最近一年使用:0次
名校
解题方法
7 . 设拋物线
的焦点是
,直线
与抛物线
相交于
两点,且
,线段
的中点
到拋物线
的准线的距离为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8098a6b57a05154a5c154c03ed96ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211f11b5b5262dae696554a0145df6ce.png)
A.![]() | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
2022-12-24更新
|
1153次组卷
|
8卷引用:重庆市长寿中学校2022-2023学年高二上学期期末数学试题
重庆市长寿中学校2022-2023学年高二上学期期末数学试题江苏省无锡市南菁高级中学2023-2024学年高二上学期期末模拟数学试题江苏省南通市如东县2023-2024学年高二上学期期末学情检测数学试卷四川省广安市第二中学校2022-2023学年高二上学期第三次月考数学(理)试题四川省泸县第五中学2022-2023学年高二下学期3月月考理科数学试题云南省曲靖市第二中学学联体2023届高三上学期第一次联考数学试题(已下线)江苏省七市2022届高三下学期第二次调研考试数学试题变式题6-10(已下线)模块八 专题7 以解析几何为背景的压轴小题
名校
解题方法
8 . 已知抛物线C:
,F为抛物线C的焦点,
是抛物线C上点,且
;
(1)求抛物线C的方程;
(2)过平面上一动点
作抛物线C的两条切线PA,PB(其中A,B为切点),求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2040b8fae7f5af94b0d911ab6255da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532bcbe8307e6b2129bdcdbd553ee5f3.png)
(1)求抛物线C的方程;
(2)过平面上一动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864a1045399e9970fe9684e9644dc061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e5109b55b3b96af00c792527c77cca.png)
您最近一年使用:0次
2022-05-15更新
|
1312次组卷
|
8卷引用:湖北省荆州中学2022-2023学年高二上学期期末数学试题
湖北省荆州中学2022-2023学年高二上学期期末数学试题2023-2024学年高二上学期期末数学仿真模拟试题02(新高考地区专用)2023-2024学年高二上学期期末仿真模拟数学试题05(新高考地区专用)(已下线)专题3.7 直线与抛物线的位置关系【八大题型】-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)江西省(东乡一中、都昌一中、丰城中学、赣州中学、景德镇二中、上饶中学、上栗中学、新建二中)新八校2022届高三下学期第二次联考数学(文)试题(已下线)2022年全国高考甲卷数学(文)试题变式题13-16题(已下线)2022年全国高考甲卷数学(文)试题变式题21-23题(已下线)模块八 专题9 以解析几何为背景的压轴解答题
名校
解题方法
9 . 过抛物线
的焦点
作直线交抛物线于
,
两点,
为线段
的中点,则( )
![](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/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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.以线段![]() ![]() |
B.以线段![]() ![]() |
C.当![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2022-03-25更新
|
969次组卷
|
5卷引用:重庆市主城区六校2021-2022学年高二上学期期末联考数学试题
名校
解题方法
10 . 设抛物线
:
的焦点为
,抛物线
上一点
的横坐标为
,过点
作抛物线
的切线
,与
轴交于点
,与
轴交于点
,与直线
:
交于点
.当
时,
.
(1)证明:
为等腰三角形,并求抛物线
的方程;
(2)若
为
轴左侧抛物线
上一点,过
作抛物线
的切线
,与直线
交于点
,与直线
交于点
,求
面积的最小值,并求取到最小值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59d0981710daa289c46a23d34435517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fae1e77288490ead83a82e7eb8360b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4cad9613154e7c15f0fe0f607ebfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f0533597752a0efee17b335e548a72.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2698f08d94afa1cd5b81444791f4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
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2022-03-23更新
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262次组卷
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2卷引用:黑龙江省大庆市大庆实验中学实验二部2023-2024学年高二上学期期末数学试题