解题方法
1 . 已知点
,
,直线AM,BM相交于点M,且直线AM的斜率与直线BM的斜率的差是2,设点M的轨迹为C.
(1)求点M的轨迹C的方程;
(2)设直线
与轨迹C交于D、E两点,
,若
,求弦长
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0310ce4692c85c9702f564923a55f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15d9ec15faa08181227d9ef0ed78905.png)
(1)求点M的轨迹C的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad6580b23e0576b82e7233f49583ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdebfa07f9b53d79d119cd3a1048e78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb47982daa0a175b9a91534dd6897c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68aeea8b2ff4169f1a8d9a206e0c31fc.png)
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2020-03-25更新
|
330次组卷
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2卷引用:四川省泸州市2019-2020学年高二上学期期末数学文科试题
名校
2 . 已知直线
经过抛物线
的焦点,与
交于
两点,若
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521d2f6806c350c416dd59c99098cbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a54879d502b28b7c4c1a188bcda933.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/c079e260aac54656e4282d0d2455189e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.![]() | B.![]() | C.1 | D.2 |
您最近一年使用:0次
2016-12-04更新
|
900次组卷
|
10卷引用:四川省南充市2018-2019学年高二下学期期末数学(文)试题
解题方法
3 . 已知直线l:
与抛物线
交于A,B两点.若
,则m的值______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48867e261c61d24a0a1a4f7ff4627c3.png)
您最近一年使用:0次
名校
解题方法
4 . 抛物线
的焦点为
,过焦点
且倾斜角为
的直线
与抛物线
相交于
两点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77d423e1b6fcc6438e3e132a6a0d7ae.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/f1e5fa72f2878b476bc57f0df12d6555.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/88bee8e70f1fab639be1636c7bce0477.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-25更新
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2卷引用:四川省广安市2019-2020学年高二上学期期末数学(文)试题
5 . 已知抛物线
的焦点为
,准线为
,直线
过点
交抛物线
于
两点,
于点
于点
,四边形
的面积为
,则
的值为( )
![](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/294f5ba74cdf695fc9a8a8e52f421328.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/eca717072d24c0e6fda2bb0d9c19b406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060c38b256a5d89e93cbd69d3554a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abba346fec338f30964d08661793e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.![]() | B.![]() | C.2 | D.![]() |
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6 . 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)
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2019-11-10更新
|
413次组卷
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5卷引用: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(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(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
7 . 已知抛物线
,其焦点到准线的距离为
.
(1)求抛物线的标准方程.
(2)若直线
与抛物线相交于
两点,且
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1ce8444ae41ee1a73450264ba53bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)求抛物线的标准方程.
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b696381c785df154b4e94ccd31ce041b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d465274d5b39e5b59722f5ffce6c61d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-01-10更新
|
431次组卷
|
2卷引用:【全国百强校】四川省棠湖中学2018-2019学年高二上学期期末模拟数学(理)试题
解题方法
8 . 已知点
为抛物线
上一点.
(1)求抛物线
的方程;
(2)若直线
与抛物线
交于
两点,以点
为直角顶点作
,且
的外接圆圆心
的坐标为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f57f41842628a2f1138a9f0e7939fb20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7eff5ecd1b7c0009d2ebaed7d9fb6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9242dd26ba42e906d512542f02807779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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9 . 已知抛物线
的焦点是椭圆
的顶点,且两曲线的交点到y轴的距离为1.
(1)求抛物线C和椭圆E的方程;
(2)过抛物线C焦点的直线l与C交于A,B两点,若
,求l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b4c33d186eed91d2ce975a4ae8fc02.png)
(1)求抛物线C和椭圆E的方程;
(2)过抛物线C焦点的直线l与C交于A,B两点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48867e261c61d24a0a1a4f7ff4627c3.png)
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2020-08-03更新
|
236次组卷
|
2卷引用:四川省南充市2019-2020学年高二(下)期末数学(文科)试题
名校
解题方法
10 . 已知点
是抛物线
上的两点,点
是线段
的中点,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661bd8d4d82205bd311e7349ae91f602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b35fadf508596511a1975d5ce5abc316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36b353993900a5059dfaabe85314209.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-10-13更新
|
932次组卷
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2卷引用:四川省宜宾市南溪区第二中学校2016-2017学年高二上学期期末考试数学(文)试题