1 . 已知圆
及点
.
(1)若点
在圆
上,求直线
的斜率.
(2)若
是圆
上任一点,求
的取值范围.
(3)若点
在圆
上,求
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef4382dee64d5b6b2ba52a1a81e8768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472335b39f337e413a4d8e90d1d6a3d9.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580f7460062604eda0b65433d04a64a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)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/debc578b8121b06920648eadcec1563b.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f90e2ac96a0175b7c22302186e51be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82bf7c885f66e9971bf61ad1a9f1701.png)
您最近一年使用:0次
2018-08-26更新
|
861次组卷
|
2卷引用:陕西省延安市黄陵中学2017-2018学年高一下学期6月月考数学试题
名校
解题方法
2 . 在直角坐标系
中,椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
的离心率为
,点
在椭圆
上.
(1)求椭圆
的方程;
(2)若斜率存在,纵截距为
的直线
与椭圆
相交于
两点,若直线
的斜率均存在,求证:直线
的斜率依次成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711ca77eefc53ea6784a4fdfdcf4827c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若斜率存在,纵截距为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.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/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaebaf8ceed245eba896f36d8ff14b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b853a7aa09fb92918e559e03684227.png)
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名校
3 . 如图,已知三角形的顶点为A(2,4),B(0,-2),C(-2,3),求:
(1)直线AB的方程;
(2)AB边上的高所在直线的方程;
(3)AB的中位线所在的直线方程.
(1)直线AB的方程;
(2)AB边上的高所在直线的方程;
(3)AB的中位线所在的直线方程.
![](https://img.xkw.com/dksih/QBM/2018/7/24/1995265424531456/1999851442118656/STEM/8cdeaf42-c927-4844-87d6-ff7f7f7d1841.png?resizew=133)
您最近一年使用:0次
2018-07-30更新
|
1519次组卷
|
3卷引用:陕西省延安市黄陵县中学2017-2018学年高一下学期期末考试数学试题
4 . 已知椭圆
的离心率为
,
是椭圆上一点.
(1)求椭圆的标准方程;
(2)过椭圆右焦点
的直线与椭圆交于
两点,
是直线
上任意一点.证明:直线
的斜率成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968bc863acdb4f2b0cba33157363e711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da40c0caa13092a358d73cdbd65c4c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8d4b8197ef9be7b65ae17fef85b76f.png)
(1)求椭圆的标准方程;
(2)过椭圆右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4e4c7a79d9d3cdb9ac5949d53e33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfa8bf45e6d2d25a730a793d0cf5694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6c47db09ed9ff189c1440a6fa4ab52.png)
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5 . 已知
的三个顶点
,
,
,求
边上的高所在直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fcd353c5b64ab549f25ef73f1d22668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51deb6458fc34e9638714c29b46cfbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823cab633d188b16f1a77ad8b14e6012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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6 . 在平面直角坐标系
中,设直线
的若方程为
.
(1) 若直线
的斜率为
,求实数
的值;
(2) 若直线
与坐标轴为成的三角形的面积为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c24417bb917104f5332a6c71fe3052.png)
(1) 若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2) 若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 已知点
是椭圆
的左右顶点,点
是椭圆的上顶点,若该椭圆的焦距为
,直线
,
的斜率之积为
.
(1)求椭圆
的方程;
(2)是否存在过点
的直线
与椭圆
交于两点
,使得以
为直径的圆经过点
?若存在,求出直线
的方程,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de83db30f001b0f8b5ec25aafb950a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
(2)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a29ba49963134a7232fa8574105fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
解题方法
8 . 已知椭圆
的长轴长为4,过点
的直线交椭圆于
两点,
为
中点,连接
并延长交椭圆于点
,记直线
和
的斜率为分别为
和
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/f75b51ed-936b-4ccb-a25a-df32a2ece01d.png?resizew=216)
(1)求椭圆方程;
(2)是否存在点P,使得
为直角?若存在,求
的面积,否则,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce2d84fae6970174099c616f9e8a1c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5179a35e8afcbe5eebf7381034206de1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/f75b51ed-936b-4ccb-a25a-df32a2ece01d.png?resizew=216)
(1)求椭圆方程;
(2)是否存在点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f75f8dbbd0778acd59e16dcb4709f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99675fa03da205c4499967c9d908412.png)
您最近一年使用:0次
2018-03-04更新
|
546次组卷
|
2卷引用:浙江省金华市十校2017-2018学年高二上学期期末联考数学试题
9 . 抛物线
与两坐标轴有三个交点,其中与
轴的交点为
.
(1)若点
在
上,求直线
斜率的取值范围;
(2)证明:经过这三个交点的圆
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309044a4946dad339b387133c55b542b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f984c6f935627d670c6a4aaf5d7a8290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)证明:经过这三个交点的圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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解题方法
10 . 过点
有一条直线
,它夹在两条直线
与
之间的线段恰被点
平分,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ad5f9e12b1d52b3ebba9eecc1bd077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b608ae33d374f27a639c38537ae4e1ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d16dc0ca493cdfa656931a33764ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2017-07-09更新
|
445次组卷
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2卷引用:湖北省部分重点中学2016-2017学年高一下学期期末考试数学(文)试题