解题方法
1 . 已知双曲线
的左焦点
关于直线
的对称点
在双曲线上.则双曲线
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5076829e649b3f3866d4a7e07a5713e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc261508f42e75323971f0b8282b0ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
解题方法
2 . 已知斜率为
的直线
过抛物线
:
的焦点
,与抛物线
交于
,
两点,过
,
作
轴的垂线,垂足分别为
,
,若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.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/0261104a7c308433a0c0508ff20ea29a.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/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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbbd5350829c259de2b4cd4c5cf6a52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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3 . 已知
是抛物线
的焦点,
为抛物线上的动点,且
的坐标为
,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce21531a886c50568b75fd4278f15dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685e73f420b856ebf5eb4eda574a4fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768508b1a1b05f0d3e8cd4d2464344df.png)
您最近一年使用:0次
解题方法
4 . 已知抛物线
:
,点
为抛物线的焦点,焦点
到直线
的距离为
,焦点
到抛物线
的准线的距离为
,且
.
(1)求抛物线
的标准方程;
(2)若
轴上存在点
,过点
的直线
与抛物线
相交于
、
两点,且
为定值,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089243ad31b799d65b9e86ec2a116188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.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/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b46acffebb6401dcfacd6e41f4718f.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca007c9790f9716d1b36fa11b4b50809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
名校
5 . 已知抛物线y2=4x的焦点到双曲线
(a>0)的一条渐近线的距离为
,则该双曲线的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d381675e2d2f62fa0685cd24ae188c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
A.x2﹣y2=1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-18更新
|
458次组卷
|
4卷引用:2020届湖北省武汉一中高三下学期4月高考模拟数学(文)试题
2020届湖北省武汉一中高三下学期4月高考模拟数学(文)试题山东省济宁市2018-2019学年高二上学期期末数学试题(已下线)第44讲 圆锥曲线的综合应用-2021年新高考数学一轮专题复习(新高考专版)江苏省淮安市盱眙县马坝高级中学2020-2021学年高二上学期期中数学试题
名校
6 . 直线
与
轴的交点为
,点
把圆
的直径分为两段,则较长一段比上较短一段的值等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb11a3230afe9bc8f3140b77aa9cf9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/ed9aa8ee238816cc8763aa3ae199cb71.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
2019-01-23更新
|
604次组卷
|
4卷引用:【市级联考】湖北省十堰市2019届高三模拟试题文科数学试题
11-12高一·辽宁铁岭·阶段练习
名校
7 . 设两条直线的方程分别为
,
,已知a,b是方程
的两个实根,且
,则这两条直线之间的距离的最大值和最小值分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6d10672d76c371bb1381a4e0cd0c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f82da9eef996e91ca09964701a916fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e668dbc9574dbcd5150e7feddc8e8f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84aa2727494fd0a5c478d5a62eb6824e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2018-08-27更新
|
882次组卷
|
13卷引用:2014届湖北省七市(州)高三年级联合考试理科数学试卷
(已下线)2014届湖北省七市(州)高三年级联合考试理科数学试卷2016届江西省新余市一中高三第四次模拟考理科数学试卷2016-2017年湖北白水高级中学高二文上周考12数学试卷(已下线)2011-2012学年辽宁省开原高级中学高一第三次月考考试数学2016-2017学年山西怀仁县一中高二理上学期期中数学试卷2016-2017年广东汕头潮阳实验学校高二理上期中数学试卷安徽省巢湖市柘皋中学2017-2018学年高一下学期期末考试数学试题(已下线)8-2 直线的交点坐标与距离公式(高效训练)-2019版导学教程一轮复习数学(人教版)(已下线)狂刷40 直线与方程-学易试题君之小题狂刷2020年高考数学(理)江苏省苏州第十中学2021-2022学年高二上学期10月段考数学试题天津市第一中学2021-2022学年高二上学期第一次月考数学试题四川省广安代市中学校2021-2022学年上学期高二第三次月考数学(文)试题第十二届高二试题(A卷)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
名校
解题方法
8 . 已知
,
分别是双曲线
:
(
,
)的左、右焦点,若点
关于双曲线
的一条渐近线的对称点为
,且
,则双曲线
的实轴长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82fe25db889399bb3ca4ffd5dd5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ab02a01fa41c784b688575fe90539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74110bc818c2f5a53d63451c5251eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436a2732e9c9d5ce401c448cd9de80e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6865ee74f7b668e5dddf069750b5e85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-05-31更新
|
415次组卷
|
2卷引用:【全国百强校】湖北省华中师范大学第一附属中学2018届高三5月押题考试数学理试题
名校
9 . 设
,
为双曲线
同一条渐近线上的两个不同的点,若向量
,
且
,则双曲线的离心率为
![](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/61b24379bfd52432a183e4aea7318e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1456031b36dbf33a12c5a2b772055977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bfa9415b1c3c5b225f93e5c064f8091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c7e1ac45e055d00510df22fb13b3a0.png)
A.2或![]() | B.3或![]() | C.![]() | D.3 |
您最近一年使用:0次
2018-04-11更新
|
2148次组卷
|
5卷引用:湖北省武汉市华中师范大学第一附属中学2020届高三下学期高考押题考试文科数学试题
解题方法
10 . 在直角坐标系
中,已知三点
若向量
与
在向量
方向上的投影相同,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e79ebbf2e109344970e1bf3b96a842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
A.2 | B.4 | C.![]() | D.![]() |
您最近一年使用:0次