名校
解题方法
1 . 在平面直角坐标系
中,直线
交椭圆
于
两点,点
关于
轴的对称点为
.
(1)用含
的式子表示
的中点坐标;
(2)证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3cc60d53da732d35fb070e71a97826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0b4bbfa0ed04cd3c2454d99d64e29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](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/2708fa6298e52f617383efc175b71ddc.png)
(1)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea68142955809f9f40b15e3fa0f5bdd5.png)
您最近一年使用:0次
名校
2 . 已知函数
.
(1)讨论
的单调性;
(2)设
,
分别为
的极大值点和极小值点,记
,
.
(ⅰ)证明:直线AB与曲线
交于另一点C;
(ⅱ)在(i)的条件下,判断是否存在常数
,使得
.若存在,求n;若不存在,说明理由.
附:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef3e79110067a46276f0869bea25af5.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
(ⅰ)证明:直线AB与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(ⅱ)在(i)的条件下,判断是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06318573bd8cf7f9b3ff443b31803df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397471107e2d3a5ccedda940a29a361a.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac45788afe168a32cfc51ad8e1429577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b4427f76042503d0ba2302a55fe33d.png)
您最近一年使用:0次
2024-02-20更新
|
981次组卷
|
6卷引用:湖南省张家界市慈利县第一中学2023-2024学年高二下学期期中考试数学试卷
名校
解题方法
3 . 如图,设P是
上的动点,点D是点P在x轴上的投影,Q点满足
(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/37763338-a15c-4467-b8f5-4e6ad24f3596.png?resizew=176)
(1)当点P在圆上运动时,求点Q的轨迹C的方程;
(2)若
,设点
,A关于原点的对称点为B,直线l过点
且与曲线C交于点M和点N,设直线AM与直线BN交于点T,设直线AM的斜率为
,直线BN的斜率为
.
(i)求证:
为定值;
(ii)求证:存在两条定直线
、
,使得点T到直线
、
的距离之积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd89a03660c85fb78bd7fe82ee3068c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c7a5dd3dcfe8d8f01993c3ff1b32a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78fbecca12ee62538020483fd55a2109.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/37763338-a15c-4467-b8f5-4e6ad24f3596.png?resizew=176)
(1)当点P在圆上运动时,求点Q的轨迹C的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07f7e233f3074007b2c692777c25019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
(ii)求证:存在两条定直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
您最近一年使用:0次
2023-11-16更新
|
682次组卷
|
3卷引用:湖南省长沙市雅礼中学2023-2024学年高二上学期期中数学试题
名校
4 . 已知
,
.
(1)求方程
的根的个数;
(2)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f9c3edab21bca58636372a006d9498.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1da9aa9c7764d416d2b01f78d3e13ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9322dd8f56b5f8d2c667fdf0d4a9f9aa.png)
(1)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703240220f321f5d3b46395e7db9cd0e.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f9c3edab21bca58636372a006d9498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5f58ad9080f2ca1a38fa92ac959c52.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
,
.
(1)若
在
上恒成立,求k的取值范围;
(2)设
为
图象上一点,
为
图象上一点,O为坐标原点,若∠AOB为锐角,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf266c400ec9f20afcdb1c76a62c6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27bcb0a5f3d22e9df052879fb0d0d4d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc1df6dfa5bb84b0f213a00a11d1a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb2a536197b222df8b10a4c453f05f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eae6fbe53a949c340ddcc6d3067f068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ca0e0b071265e90852d22ef88de865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773c2bb351fa6cfcf69ad75b63395cbe.png)
您最近一年使用:0次
2023-04-15更新
|
253次组卷
|
2卷引用:湖南省多校2022-2023学年高二下学期期中联考数学试题
名校
解题方法
6 . 设
分别是椭圆
的左、右焦点,过
作倾斜角为
的直线交椭圆
于
两点,
到直线
的距离为3,连接椭圆
的四个顶点得到的菱形面积为4.
(1)求椭圆
的方程;
(2)已知点
,设
是椭圆
上的一点,过
两点的直线
交
轴于点
,若
,求
的取值范围;
(3)作直线
与椭圆
交于不同的两点
,其中
点的坐标为
,若点
是线段
垂直平分线上一点,且满足
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90627d25fa0d0e5345c834b96331e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8af6e62058cc4e2d83d5da7f4c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5889e1f093f2c35273d3132ef8434e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb00e074cc9c58f5dd12cd88acd78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b124f05ddcafdac85ed09114811ea424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33eecd596f54e2e53e7d8f6480774e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2022-11-28更新
|
738次组卷
|
4卷引用:湖南省常德市汉寿县第一中学2023-2024学年高二上学期11月期中数学试题
湖南省常德市汉寿县第一中学2023-2024学年高二上学期11月期中数学试题上海市实验学校2023届高三上学期11月月考数学试题(已下线)数学(乙卷文科)(已下线)专题13 圆锥曲线压轴解答题常考套路归类(精讲精练)-3
名校
解题方法
7 . 平面内两定点F1(
,0),F2(
,0),点O为坐标原点,动点P满足F2P的中点E在⊙O:
上,点Q在F1P上且
.
(1)求动点Q的轨迹C的方程;
(2)过点D(3,0)分别作两条直线与轨迹C交于点A,点B.线段DA的中点为M,线段DB的中点为N,若OM⊥ON,求证:直线AB过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0d7704614f7106d3e838c5c121b8f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08227ca941898eb34941f446ca8b1de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2970ece1dff70d1109579c5b87f035.png)
(1)求动点Q的轨迹C的方程;
(2)过点D(3,0)分别作两条直线与轨迹C交于点A,点B.线段DA的中点为M,线段DB的中点为N,若OM⊥ON,求证:直线AB过定点.
您最近一年使用:0次
2022-03-19更新
|
597次组卷
|
2卷引用:湖南省衡阳市第一中学2022-2023学年高三上学期期中数学试题