名校
解题方法
1 . 给出下列五个命题:
①已知直线
、
和平面
,若
,
,则
;
②平面上到一个定点和一条定直线的距离相等的点的轨迹是一条抛物线;
③双曲线
,则直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef7c2a877878794a822b815a57e3e91.png)
与双曲线有且只有一个公共点;
④若两个平面垂直,那么一个平面内与它们的交线不垂直的直线与另一个平面也不垂直;
⑤过
的直线
与椭圆
交于
、
两点,线段
中点为
,设直线
斜率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
,直线
的斜率为
,则
等于
.
其中,正确命题的序号为_______ .
①已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff4e42856fa5f6a4e12993e53b065e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22374b9b90e04bd0e0e34ece26a89f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d07324ee4dec98ce18a2f37728791b.png)
②平面上到一个定点和一条定直线的距离相等的点的轨迹是一条抛物线;
③双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e0b8c81ac2e1f768c246208e2ca3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef7c2a877878794a822b815a57e3e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abad909e0902a78436f29d6a755e2e1.png)
④若两个平面垂直,那么一个平面内与它们的交线不垂直的直线与另一个平面也不垂直;
⑤过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3cb77304ba3546c1fc629832f1b811f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
其中,正确命题的序号为
您最近一年使用:0次
2020-03-04更新
|
370次组卷
|
3卷引用:2020届湖南省常德市高三高考模拟考试(一)数学(文)试题
2 . 已知动点
到定点
的距离比
到定直线
的距离小
.
(1)求点
的轨迹
的方程;
(2)过点
任意作互相垂直的两条直线
,
,分别交曲线
于点
,
和
,
.设线段
,
的中点分别为
,
,求证:直线
恒过一个定点;
(3)在(2)的条件下,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871d325ce7035f460b666ada2ea2955.png)
您最近一年使用:0次
3 . 设抛物线
的焦点为
,点
在抛物线
上,
,若以
为直径的圆过点
,则抛物线
的焦点到准线距离为( )
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09e8a127fffff3b4df40d85780ace8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.2 | B.2或4 | C.8 | D.8或16 |
您最近一年使用:0次
名校
解题方法
4 . 以抛物线
的焦点为焦点,以直线
为渐近线的双曲线标准方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3051f43ac48c0a730a791b8a93ad37.png)
您最近一年使用:0次
2020-05-29更新
|
311次组卷
|
2卷引用:2020届江苏省南通市高三下学期4月高考模拟数学试题
名校
5 . 已知双曲线
的右顶点到其一条渐近线的距离等于
,抛物线
的焦点与双曲线
的右焦点重合,则抛物线
上的动点
到直线
和
的距离之和的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fed3ab75a5aa018fd02faa8cccc90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802e162b98c280720fcb909cf392fda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0782718dd8b2e591ef21fc89d1af2fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4e70ad712d8d6e2066e38093ad732e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41ccf22ae1da0f62c6e36e724cb4382.png)
您最近一年使用:0次
2017-04-22更新
|
922次组卷
|
4卷引用:重庆市第八中学2022届高三下学期调研检测(二)数学试题
6 . 已知点A是抛物线
与双曲线
的一条渐近线的交点,若点A到抛物线
的准线的距离为p,则双曲线的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52ed4523cbf8d0654405e5a4eff52bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a6638f9f54e9d582ec7f43937862bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
2019-05-08更新
|
481次组卷
|
2卷引用:【区级联考】天津市红桥区2019届高三二模数学(文)试题
7 . 已知抛物线
的焦点为
,准线为
,抛物线
上存在一点
,过点
作
,垂足为
,使
是等边三角形且面积为
.
(1)求抛物线
的方程;
(2)若点
是圆
与抛物线
的一个交点,点
,当
取得最小值时,求此时圆
的方程.
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdd3be8e58a9150e5b1e2a43988fd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3cbfdd47ac056dbdaa681462aa9433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3285a2383fa18025034cf9876175295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1049150045f56c248032731ba5b9ea57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
2019-01-04更新
|
510次组卷
|
2卷引用:【市级联考】陕西省彬州市2019届高三第一次教学质量监测试卷理科数学试题
解题方法
8 . 如图所示,在直角坐标系
中,点
到抛物线
的准线的距离为
,点
是
上的定点,
、
是
上的两个动点,且线段
的中点
在线段
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/87842e7a-51ef-41bf-adab-15f2b8bb5e03.png?resizew=149)
(1)抛物线
的方程及
的值;
(2)当点
、
分别在第一、四象限时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9deb20b57fe0b94ca8520b55298d6c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dbf265b90903dcabe9f257f7dbace6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde912c542ae76c10024e25292e2a094.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5209cf3b0c9a91e93f73aa93cab13d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/87842e7a-51ef-41bf-adab-15f2b8bb5e03.png?resizew=149)
(1)抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)当点
![](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/69dd5156b2ac2c5cf130725bd6fc941a.png)
您最近一年使用:0次
2020-02-09更新
|
336次组卷
|
2卷引用:2016届上海市嘉定区高三第三次模拟练习(文)数学试题
名校
解题方法
9 . 已知直线
与直线
互相垂直,且交点为Q,点
,线段QF的垂直平分线与直线
交于点P.
(I)若动点P的轨迹为曲线E,求曲线E的方程;
(Ⅱ)已知点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0567d4f947cba391a497bf1daef06e.png)
,经过点M的两条直线分别与曲线E交于A,B和C,D,且
,设直线AC,BD的斜率分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f67daeddff2e805bf34d43e629d959.png)
,是否存在常数
,使得当
变动时,
?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e611c9450509447d31c3b8f46195f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(I)若动点P的轨迹为曲线E,求曲线E的方程;
(Ⅱ)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0567d4f947cba391a497bf1daef06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c699a757a7ee06c063150def9c5dffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d83c629c401bf98546fa8cf474ed36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f67daeddff2e805bf34d43e629d959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d78c204b9150a9275a27a4d581ba7c7.png)
您最近一年使用:0次
10 . 抛物线
的焦准距是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48f28aeccf369df5980ac787e9e313f.png)
您最近一年使用:0次