名校
解题方法
1 . 在平面直角坐标系中,△ABC的两个顶点A,B的坐标分别为
,
,平面内两点G,M同时满足以下3个条件:①G是△ABC三条边中线的交点:②M是△ABC的外心;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea30b3a5f150793257ee373c4beafbb2.png)
(1)求△ABC的顶点C的轨迹方程;
(2)若点P(2,0)与(1)中轨迹上的点E,F三点共线,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea30b3a5f150793257ee373c4beafbb2.png)
(1)求△ABC的顶点C的轨迹方程;
(2)若点P(2,0)与(1)中轨迹上的点E,F三点共线,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9c4d9fc5ff8c246e3925fcf4cc2469.png)
您最近一年使用:0次
2022-04-09更新
|
543次组卷
|
3卷引用:福建省德化第一中学2021届高三6月高考适应性考试数学试题
2 . 已知椭圆
的右焦点为
,离心率为
,点
在椭圆上且位于第二象限,直线
被圆
截得的线段的长为
.
(1)求直线
的斜率;
(2)当
时,①求该椭圆的方程;②设动点
在椭圆上,若直线
的斜率小于
,求直线
(
为原点)的斜率的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24550b13dbecf7d86c7054250e987274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b881b048b1a0e323593df274e41067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8ab1c969ee3eb220d2ea7990cf926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
解题方法
3 . 已知在平面直角坐标系中,动点
满足到定点
和直线
的距离之比为
.
(1)求动点
的轨迹
的方程;
(2)若与原点距离为
的直线
:
与曲线
相交于A,
两点,直线
与直线
平行,且与曲线
相切于点
位于直线
的两侧
,记
,
的面积分别为
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12afb7d94cc8c3aa927930fc328839c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若与原点距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48073ce910d9c1db1956edcbdc105ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.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/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
名校
解题方法
4 . 已知曲线
:
,直线
:
与曲线
交于
,
两点,
,
两点在
轴上的射影分别为
,
.
为坐标原点.
(1)当点
坐标为
时,求
的值;
(2)若
的面积为
,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2407a4b6e8e9a5997f3dfa32e745236b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7bd8bfbd43d0cf1604b8d7e0023f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38be38165dc2307982fc57001a447c56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
名校
解题方法
5 . 已知圆锥曲线
上的点
的坐标
满足
.
(1)说明
是什么图形,并写出其标准方程;
(2)若斜率为1的直线
与
交于
轴右侧不同的两点
,
,求直线
在
轴上的截距的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd05490af0096bb615260e752b67cfb6.png)
(1)说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若斜率为1的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2021-11-29更新
|
509次组卷
|
3卷引用:福建省龙岩第一中学2021-2022学年高二上学期模块考试(期中)数学试题
名校
解题方法
6 . 与椭圆
(
且
)相关的两条直线
称为椭圆C的准线,已知直线l是位于椭圆C右侧的一条准线,椭圆上的点到l的距离的最大值为6,最小值为2.
(1)求椭圆C的标准方程及直线l的方程;
(2)设椭圆C的左右两个顶点分别为
,T为直线l上的动点,且T不在x轴上,
与C的另一个交点为M,
与C的另一个交点为N,F为椭圆C的左焦点,求证:
的周长为8.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00f26e45e91c36ef8833cf46d0e3b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671241e869118e81afc8cc427d24fe22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9687dfe1247fd7ff48389de273b16038.png)
(1)求椭圆C的标准方程及直线l的方程;
(2)设椭圆C的左右两个顶点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e463e661d45282d927b7596d5ad3b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3896bb7e10246b3b8c33da4c500762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb02e157819a2bdd0f2790cbc825e9.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,已知椭圆
的右焦点为F,右顶点为A,过原点O的直线l(斜率不为0)与椭圆交于B,C两点,
的中点为M,若
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ac84f085-4550-4578-a790-06d88fc5c399.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ef2114ac01219748ecc27a888610af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ac84f085-4550-4578-a790-06d88fc5c399.png?resizew=169)
A.![]() | B.![]() | C.椭圆的离心率![]() | D.椭圆的离心率![]() |
您最近一年使用:0次
2021-11-14更新
|
182次组卷
|
3卷引用:福建省连城县第一中学2021-2022学年高二上学期期中考试数学试题
名校
8 . 如图所示,在圆锥内放入两个球
,
它们都与圆锥相切(即与圆锥的每条母线相切),切点圆(图中粗线所示)分别为
,
,这两个球都与平面
相切,切点分别为
,
,丹德林(G·Dandelin)利用这个模型证明了平面
与圆锥侧面的交线为椭圆,
,
为此椭圆的两个焦点,这两个球也称为Dandelin双球.若圆锥的母线与它的轴的夹角为
,球
,
的半径分别为1、4,则椭圆的长轴长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e69fd92eceb49fed10c4b50723d13d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f7ba050bb69ab55bdcb96f935f5922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://img.xkw.com/dksih/QBM/2021/10/12/2827832265875456/2829700853653504/STEM/fc9dc2db-61ed-42b1-912b-53999657509c.png?resizew=370)
您最近一年使用:0次
解题方法
9 . 已知椭圆
:
的左、右焦点分别为
,
,点
,直线
的倾斜角为60°,原点
到直线
的距离是
.
(1)求
的方程;
(2)过
上任一点
作直线
,
分别交
于
,
(异于
的两点),且
,
,探究
是否为定值?若是,求出定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41ac040e63589b9d5dca3ab377c39cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af335556b6f1ab76a79221cfa6208851.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d9e0a6cab928b4aeee906d25c7b7e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23230639cf851670af4ea9834cf630cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c1a48d9fa8020b77dde9c4b29e18b8.png)
您最近一年使用:0次
2021-10-06更新
|
2053次组卷
|
6卷引用:福建省泉州市2022届高三8月份质检数学试题(一)
福建省泉州市2022届高三8月份质检数学试题(一)江西科技学院附属中学2021-2022学年高二上学期期中考试数学(文)试题(已下线)9.6 三定问题及最值(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)(已下线)专题9.7 圆锥曲线综合问题 2022年高考数学一轮复习讲练测(新教材新高考)(讲)(已下线)第十一章 圆锥曲线专练10—椭圆大题(探索性问题)-2022届高三数学一轮复习(已下线)专题22 圆锥曲线中的定点、定值、定直线问题 微点2 圆锥曲线中的定值问题
名校
解题方法
10 . 已知
,
分别为椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470cde3e5244dfbbb08078d8e5717ccb.png)
的左、右焦点,椭圆上任意一点
到焦点距离的最小值与最大值之比为
,过
且垂直于长轴的椭圆
的弦长为
.
(1)求椭圆
的标准方程;
(2)过
的直线与椭圆
相交的交点
、
与右焦点
所围成的三角形的内切圆面积是否存在最大值?若存在,试求出最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470cde3e5244dfbbb08078d8e5717ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04239f37cf5218093585663ccb5688eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/a3fb78c5f885034612c0e030b920143d.png)
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2021-09-12更新
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14卷引用:福建省福州屏东中学2021-2022学年高二上学期期中考试数学试题
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