19-20高二上·上海浦东新·期末
名校
解题方法
1 . 倾斜角为
的直线过抛物线
的焦点
,交抛物线于
、
两点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.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/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
您最近一年使用:0次
2020-02-29更新
|
175次组卷
|
3卷引用:上海市华东师范大学第二附属中学2019-2020学年高二上学期期末数学试题
(已下线)上海市华东师范大学第二附属中学2019-2020学年高二上学期期末数学试题四川省宜宾市第四中学2020-2021学年高二上学期第一次月考数学(理)试题四川省宜宾市第四中学2020-2021学年高二上学期第一次月考数学(文)试题
解题方法
2 . 已知抛物线
的焦点为
,
是
上过
的弦,且
的斜率为1,若线段
的垂直平分线与
轴相交于点
,求
的值及
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2b0202ba954e4a710d911feeb57b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26950f8f7e606323df22a875b4ab9c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c60b5065275b6bf1e5597d2f544e45a.png)
您最近一年使用:0次
名校
3 . 若过抛物线
的焦点,且倾斜角为
的直线交抛物线于
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.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/88bee8e70f1fab639be1636c7bce0477.png)
您最近一年使用:0次
4 . 已知抛物线
截直线
所得的弦长为
.
(1)求实数
的值;
(2)试在
轴上求一点
,使得
的面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebb3b7f47e0decd48e64cb32aaa5903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e27ca8752789a82ffcdb3b1c18cfd5.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)试在
![](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/f6d7dd733fe8e8d7bdbe1b8190cfdf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6506576f38bb7111019a2eb2aa772fd4.png)
您最近一年使用:0次
2019-11-10更新
|
413次组卷
|
5卷引用:上海市上海师范大学附属外国语中学2018-2019学年高二上学期期末数学试题
上海市上海师范大学附属外国语中学2018-2019学年高二上学期期末数学试题四川省凉山州2019-2020学年高二上学期期末考试数学(文科)试题四川省凉山州2019-2020学年高二上学期期末考试数学(理科)试题(已下线)2019年12月6日《每日一题》选修2-1理数-直线与抛物线的位置关系(已下线)2019年12月6日《每日一题》选修1-1文数-直线与抛物线的位置关系
名校
5 . 设抛物线Γ的方程为y2=4x,点P的坐标为(1,1).
(1)过点P,斜率为﹣1的直线l交抛物线Γ于U,V两点,求线段UV的长;
(2)设Q是抛物线Γ上的动点,R是线段PQ上的一点,满足
2
,求动点R的轨迹方程;
(3)设AB,CD是抛物线Γ的两条经过点P的动弦,满足AB⊥CD.点M,N分别是弦AB与CD的中点,是否存在一个定点T,使得M,N,T三点总是共线?若存在,求出点T的坐标;若不存在,说明理由.
(1)过点P,斜率为﹣1的直线l交抛物线Γ于U,V两点,求线段UV的长;
(2)设Q是抛物线Γ上的动点,R是线段PQ上的一点,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098d2aa5acd164317a1d669711899153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249fbefd39bca7776c6848692e949658.png)
(3)设AB,CD是抛物线Γ的两条经过点P的动弦,满足AB⊥CD.点M,N分别是弦AB与CD的中点,是否存在一个定点T,使得M,N,T三点总是共线?若存在,求出点T的坐标;若不存在,说明理由.
您最近一年使用:0次
2020-01-23更新
|
212次组卷
|
2卷引用:上海市控江中学2017-2018学年高二下学期期末数学试题
6 . 已知抛物线
的准线是直线
,直线
与抛物线
相交于
两个不同点
(1)求抛物线
的方程
(2)求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33400b08941f4f9c0ed12b0e0cdff822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5639d8ad3f09809ac6b1a39160a0a0ae.png)
您最近一年使用:0次
7 . 经过抛物线
的焦点作直线
交该抛物线于
,
两点,若
,则线段
的长等于__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1183df9f26985febdc844cda75ed4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0352e676564630641d799c9e3f85fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
8 . 直线
与抛物线
交于
、
两点,则线段
的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eaa224254a49065d213ca3a2f75f0db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0261104a7c308433a0c0508ff20ea29a.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-05更新
|
260次组卷
|
2卷引用:上海市延安中学2015-2016学年高二上学期期末数学试题
名校
9 . 设直线l:
与抛物线
相交于不同的两点A,B,M为线段AB中点,
(1)若
,且
,求线段AB的长;
(2)若直线l与圆C:
相切于点M,求直线l的方程;
(3)若直线l与圆C:
相切于点M,写出符合条件的直线l的条数
直接写出结论即可
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372a0d1035a16a6d353d8a0bb8483dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70fbef98c128dd499c92a3b795d8e954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
(2)若直线l与圆C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68eb8dd81cac445547d01119154113a1.png)
(3)若直线l与圆C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800be2622c8ebf4712c1cba8a0de1de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
您最近一年使用:0次
10 . 已知抛物线
,准线方程为
,直线
过定点
(
)且与抛物线交于
、
两点,
为坐标原点.
(1)求抛物线的方程;
(2)
是否为定值,若是,求出这个定值;若不是,请说明理由;
(3)当
时,设
,记
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b35f0b940c8422ef47edc3b7ce55e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6e582064c4754d7c4dfd51645aadb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909ec214202256cbc38bb6b21359a17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.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/1dde8112e8eb968fd042418dd632759e.png)
(1)求抛物线的方程;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658aa70a197c830aa765f2f7ea4c86c5.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d392c79b0c9bf2ffa4bdd9d1bc877f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c58b25d5ab04b49bbda7805c630b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a359ca21213ec934fd7a109c22814680.png)
您最近一年使用:0次
2020-02-01更新
|
155次组卷
|
2卷引用:上海市嘉定区2016届高三上学期第一次质量调研(文)数学试题