名校
1 . 已知抛物线C:的焦点为F,准线为l,过F的直线交抛物线C于A,B两点,
的中垂线分别交l与x轴于D,E两点(D,E在
的两侧).若四边形
为菱形,则
您最近一年使用:0次
名校
解题方法
2 . 已知抛物线
的焦点为
,过
的弦
满足
,则
的值为______ .
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f8f333303816ff66e3aa44bcf97268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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3 . 已知抛物线
的焦点为
,点
为抛物线上一点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd1f7bf8f93c219c8716df185b66e1c.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/3bb8d8c522a92060269293f53965ebac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd1f7bf8f93c219c8716df185b66e1c.png)
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2023-01-04更新
|
596次组卷
|
4卷引用:浙江省宁波市奉化区2023-2024学年高二上学期期末检测数学试题
解题方法
4 . 已知抛物线
的焦点为F,斜率为2的直线l与C的交点为
、与x轴的交点为P,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3596552a5c0bf962413558def3308fbd.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209447428c695fff0361993764f9e115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3596552a5c0bf962413558def3308fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
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5 . 已知A、B为抛物线
上的不同的两点,线段
中点为P,若
,则点P到x轴距离的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907a673d52825cd7df84b400972d4b9.png)
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6 . 已知直线
与抛物线
交于M,N两点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098658ddd8826dc6637297e1e6c7acdc.png)
______ ,线段MN的中点坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098658ddd8826dc6637297e1e6c7acdc.png)
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7 . 设
为抛物线
的焦点(
为坐标原点),
为抛物线上一点,若
,则点
的横坐标
的值是______ ,三角形
的面积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3577bf250e9110428ff34f518fbd9f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff29e80ba6c16e1177e7873a396a7a6.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/2f459a631215f68976cc4eed965f0188.png)
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8 . 已知抛物线
,焦点为
,准线为
,P为抛物线上一点,
,A为垂足,如果直线
的斜率为
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd05d243091ba3ec8da3d33fc5956e2.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4e46152388af7b19585d5b0072ab88.png)
________ (O是坐标原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3abf3173133683369785897e67fa84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb50782b4a4f59f8798a90086b0d5c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071ff10740d0ef09e9b6ab0bf8a92283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd05d243091ba3ec8da3d33fc5956e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4e46152388af7b19585d5b0072ab88.png)
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2020-04-20更新
|
171次组卷
|
2卷引用:浙江省名校协作体2018-2019学年高二下学期开学联考数学试题
名校
解题方法
9 . 已知
是抛物线
:
的焦点,
是
上一点,
的延长线交
轴于点
,若
为线段
的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.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/7089148c36cb3c39af71de653756396a.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/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68121ddc93144accd7f8f4c67c66865f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
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10 . 定长是3的线段AB的两端点在抛物线
上移动,M是线段AB的中点,则M到y轴距离的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
您最近一年使用:0次
2020-01-12更新
|
344次组卷
|
5卷引用:【新东方】新东方高二数学试卷292
(已下线)【新东方】新东方高二数学试卷292(已下线)【新东方】新东方高二数学试卷298浙江省杭州市高级中学2019-2020学年高二上学期期末数学试题上海市建平中学2016-2017学年高二下学期期中数学试题河北省唐山市2024届高三上学期期末模拟数学试题