21-22高三上·上海浦东新·期中
1 . 已知
是抛物线
的焦点,
是抛物线的准线与
轴的交点,且
.
(1)求抛物线的方程;
(2)设抛物线
上的点
在其准线上的射影分别为
,若
的面积是
的面积的2倍,求线段
中点的轨迹方程.
(3)设过点
的直线交抛物线于
两点,斜率为
的直线
与直线
轴依次交于点
且
,求直线
在
轴上截距的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532bcbe8307e6b2129bdcdbd553ee5f3.png)
(1)求抛物线的方程;
(2)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe7fd9b0c3c203a053a7ea52b71e7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edddf490e400a15fb281fd3b1302697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78261dfc94bd6a3e812cac6f29494fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5ed818d49a099d0e20883f85ce1f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcb20a6972108871adbf284f9e5006.png)
(3)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21096eb4c31a65b90fe9af971488fa5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018a31d6b623084400dec0dcf50eebd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/528696bb58751536475158396be1b955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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21-22高二·江苏·单元测试
2 . 已知抛物线C:
的焦点为F,过F的直线l与抛物线C交于A,B两点,线段AB长的最小值为4.
(1)求抛物线C的方程.
(2)在抛物线C上是否存在点M,使得
是以M为直角顶点的等腰直角三角形,且其面积为16?若存在,求出点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
(1)求抛物线C的方程.
(2)在抛物线C上是否存在点M,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
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21-22高二·江苏·单元测试
3 . 如图,已知抛物线
,过它的焦点F的直线
与其相交于A,B两点,O为坐标原点.
![](https://img.xkw.com/dksih/QBM/2022/1/2/2885857544642560/2886582995804160/STEM/7d85a231a1f540fe8d5e4996ccbbc141.png?resizew=194)
(1)若抛物线过点
,求它的方程;
(2)在(1)的条件下,若直线
的斜率为1,求
的面积;
(3)
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2022/1/2/2885857544642560/2886582995804160/STEM/7d85a231a1f540fe8d5e4996ccbbc141.png?resizew=194)
(1)若抛物线过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
(2)在(1)的条件下,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89f0127f43c56777566f10fa5be3b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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解题方法
4 . 已知点
(其中
)是曲线
上的两点,点A,D两点在x轴上的射影分别为点B、C,且
.
(1)当点B的坐标为
,且
时,求直线AD的方程;
(2)记
的面积为
,梯形ABCD的面积为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d1c383d631764903d791c2129d0ec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3ecbf696f5e788c2a1c4e0fedca569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ca8936507e9f3662cfc2e6441b5398.png)
(1)当点B的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7bd8bfbd43d0cf1604b8d7e0023f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319ffc470b8504d1f6c332d661254af2.png)
您最近一年使用:0次
名校
解题方法
5 . 已知动圆P与x轴相切且与圆x2+(y-2)2=4相外切,圆心P在x轴的上方,P点的轨迹为曲线C.
(1)求C的方程;
(2)已知E(4,2),过点(0,4)作直线交曲线C于A,B两点,分别以A,B为切点作曲线C的切线相交于D,当△ABE的面积S1与△ABD的面积S2之比
取最大值时,求直线AB的方程.
(1)求C的方程;
(2)已知E(4,2),过点(0,4)作直线交曲线C于A,B两点,分别以A,B为切点作曲线C的切线相交于D,当△ABE的面积S1与△ABD的面积S2之比
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
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2021-03-11更新
|
1043次组卷
|
9卷引用:安徽省江南十校2021届高三下学期3月一模联考理科数学试题
安徽省江南十校2021届高三下学期3月一模联考理科数学试题安徽省江南十校2021届高三下学期3月一模联考文科数学试题(已下线)必刷卷04-2021年高考数学(理)考前信息必刷卷(新课标卷)(已下线)专题1.10 圆锥曲线-抛物线-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)精做05 解析几何-备战2021年高考数学大题精做(新高考专用)(已下线)2021年高考数学押题预测卷(江苏专用)02贵州省瓮安中学高三2021届6月关门考试数学(理)试题(已下线)专题3.9 抛物线的综合问题-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)专题1 千年古图 巧用定理 练
名校
解题方法
6 . 已知抛物线C的顶点在原点,焦点在
轴,点
在抛物线C上.
(1)求抛物线C的方程;
(2)斜率为
的直线
过定点
,与抛物线C相交所得弦长为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56801f4cfc34a5f57cc7ad3b8dd74902.png)
(1)求抛物线C的方程;
(2)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e30645f36e8628b9e25d53598d5174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2021-03-05更新
|
432次组卷
|
2卷引用:陕西省西安市西光中学2020-2021学年高二上学期期末理科数学试题
解题方法
7 . 设
为曲线
上两点,
与
的横坐标之和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9ab51e0bae2c3b0f6c556ea9cdf7ad.png)
(1)若
与
的纵坐标之和为
求直线
的方程.
(2)证明:线段
的垂直平分线过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.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/4c9ab51e0bae2c3b0f6c556ea9cdf7ad.png)
(1)若
![](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/5f9761eeec66bbc7a748bad1e79556bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)证明:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2021-02-14更新
|
103次组卷
|
2卷引用:广西贵港市2020-2021学年度高二上学期期末数学(文)试题
解题方法
8 . 已知抛物线
的准线与
轴交于
,其焦点为
.过点
的直线与抛物线
交于
、
两点,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332cc4583c6cee50ac7cc518f96f9ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97fb96d52f1ab7cd9c4e9427838bd6e6.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() |
B.若在准线上存在一点![]() ![]() ![]() ![]() |
C.若在准线上存在一点![]() ![]() ![]() ![]() |
D.若在准线上存在一点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
9 . 已知抛物线
:
的焦点为
,过
的直线
与抛物线
交于
,
两点,其中点
在第一象限,
.
(1)若
(
为坐标原点),求直线
的方程;
(2)点
在
轴上运动,若
,求点
横坐标的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/0f85fca60a11e1af2bf50138d0e3fe62.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/657048fd23f4d146140e0b63d9a8d8e3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d05d3172af052993273e3e05f26a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf9292e68c49f94a5a50d2951f6dabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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10 . 已知
,
为抛物线
上两点,
为坐标原点,且
,则
的最小值为______ .
![](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/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a563c50a7f6d10fa46339d7107fc85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b33a08aa12bc8a1c671f8cb673ed0b.png)
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2020-07-25更新
|
872次组卷
|
5卷引用:辽宁省辽南协作校2020-2021学年高二上学期期末数学试题