1 . 如图,已知抛物线
的准线与
轴交于点
,过焦点
作倾斜角为
的直线
与抛物线
交于
两点,过
两点分别作准线的垂线,垂足分别为
,则
的值等于 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59458647a9bd07be8c29ff0bc64b03d8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/e1c3a58f-33eb-42a9-a3d9-f30e8dedc676.png?resizew=133)
您最近一年使用:0次
2016-12-03更新
|
795次组卷
|
2卷引用:2015届海南省嘉积中学高三下学期大测三理科数学试卷
名校
解题方法
2 . 已知双曲线
的中心在原点且对称轴为坐标轴,
的一条渐近线与焦点为
的抛物线
交于点
,且
,则双曲线的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b333ae64eb8e235779e9fdaa24e6247.png)
您最近一年使用:0次
13-14高三上·山西忻州·期中
解题方法
3 . 如图已知抛物线
的焦点坐标为
,过
的直线交抛物线
于
两点,直线
分别与直线
相交于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/17/42bfcbfe-806a-48d5-b174-87b2ba05c3dd.png?resizew=251)
(1)求抛物线
的方程;
(2)证明
与
的面积之比为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df40ba57bb5819b4aaa38d514500052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739ac456da45baf5f103ba376ae88058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23a17a4f6af9cdd1455190ce90492b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/17/42bfcbfe-806a-48d5-b174-87b2ba05c3dd.png?resizew=251)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066ea7c8dac31105aadedad5f34d93fa.png)
您最近一年使用:0次
2016-12-02更新
|
982次组卷
|
4卷引用:【全国市级联考】海南省琼海市2018届高考模拟考试文数试卷
【全国市级联考】海南省琼海市2018届高考模拟考试文数试卷湖南省五市十校教研教改共同体2018届高三12月联考数学(文)试题(已下线)2014届山西省忻州一中高三上学期期中考试理科数学试卷(已下线)2014届山西省忻州一中高三上学期期中考试文科数学试卷
4 . 设椭圆
,定义椭圆
的“相关圆”方程为
.若抛物线
的焦点与椭圆
的一个焦点重合,且椭圆
短轴 一个端点和其两个焦点构成直角三角形.
(Ⅰ)求椭圆
的方程和“相关圆”
的方程;
(Ⅱ)过“相关圆”
上任意一点
的直线
与椭圆
交于
两点.
为坐标原点,若
,证明原点
到直线
的距离是定值,并求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/56afc5a624634baf9baec213d168d965.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/253e88c11236431280145d6cd6f000e0.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/5cbb63c62d644ec59ac7538f9d249f48.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/5fb669fe466d43fc9ee205915cfd633f.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/253e88c11236431280145d6cd6f000e0.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/253e88c11236431280145d6cd6f000e0.png)
(Ⅰ)求椭圆
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/253e88c11236431280145d6cd6f000e0.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/82e21fdb8cbd4260812a54b696ca9905.png)
(Ⅱ)过“相关圆”
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/82e21fdb8cbd4260812a54b696ca9905.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/4db8d7e2e1a64e3a8ef3d2a042910840.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/04d81cc80e484800a627346c0162ad65.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/253e88c11236431280145d6cd6f000e0.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/3da383c4cc1f4c889e47c4827692f911.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/5f44075e9e7c4610a775eee1b87d3643.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/497082593a4d49dd88246073e271c763.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/5f44075e9e7c4610a775eee1b87d3643.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/1aaa2cfc28e0428192ecec5dfd149b88.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927734513664/1572927740076032/STEM/c774ef38bea9455ca68a9093db57a162.png)
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5 . 已知圆C1:x2+y2=r2截直线x+y-
=0所得的弦长为
.抛物线C2:x2=2py(p>0)的焦点在圆C1上.
(1)求抛物线C2的方程;
(2)过点A(-1,0)的直线l与抛物线C2交于B,C两点,又分别过B、C两点作抛物线C2的切线,当两条切线互相垂直时,求直线l的方程.
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490908160/STEM/9f164a15d47c4eb8bb844d9a9d63acbb.png)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490908160/STEM/6fcc6461c4584e6498f175c6ed51ba73.png)
(1)求抛物线C2的方程;
(2)过点A(-1,0)的直线l与抛物线C2交于B,C两点,又分别过B、C两点作抛物线C2的切线,当两条切线互相垂直时,求直线l的方程.
您最近一年使用:0次
解题方法
6 . 已知抛物线
的焦点为
,
为
上异于原点的任意一点.
(1)若直线
过焦点
,且与抛物线
交于
两点,若
是
的一个靠近点
的三等分点,且点
的横坐标为1,弦长
时,求抛物线
的方程;
(2)在(1)的条件下,若
是抛物线
上位于曲线
(
为坐标原点,不含端点
)上的一点,求
的最大面积.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/01c74a907dda6bb7d9d56d009d9df253.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在(1)的条件下,若
![](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/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
您最近一年使用:0次
2016-12-04更新
|
259次组卷
|
2卷引用:2016届海南中学高三考前高考模拟十一文科数学试卷
2012·吉林延边·一模
解题方法
7 . 若双曲线
的左右焦点分别为
、
,线段
被抛物线
的焦点分成
的两段,则此双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e464e56ccbc33ed31393e8bff32ac66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e48816bc504a9d03389e3e4637a049.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知点
是拋物线
的焦点,
是该拋物线上两点,
的中点为
的中点分别为
,则
的横坐标之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290a56449ad6dd65aec7525c94273f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5386183ce07d56437a0d6bcda632cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e66a9fca5fdbb9615370c1bb072488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知抛物线C的顶点在坐标原点,焦点为F(1,0),过焦点F的直线l与抛物线C相交于A、B两点,若直线l的倾斜角为45°,则弦AB的中点坐标为_________
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10 . 点M(χ0,
)是抛物线χ2=2P
(P>0)上一点, 若点M到该抛物线的焦点的距离为2,
则点M到坐标原点的距离为
![](https://img.xkw.com/dksih/QBM/2015/11/25/1572307749904384/1572307755433984/STEM/82e36168b3834598b2fa9bcde5e851ed.png)
![](https://img.xkw.com/dksih/QBM/2015/11/25/1572307749904384/1572307755433984/STEM/14dc6e9805134241b61bed52dbe7d956.png)
则点M到坐标原点的距离为
A.![]() | B.![]() | C.![]() | D.![]() |
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