解题方法
1 . 已知双曲线
的右焦点为
,且经过点
.
(1)求双曲线C的方程;
(2)若以
为斜率的直线L与双曲线C相交于两个不同的点M,N,线段
的垂直平分线与两坐标轴围成的三角形的面积为
,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623afc24f2227004b0e1b3922dfb954b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bc90103eb136a52d5468f673899ff6.png)
(1)求双曲线C的方程;
(2)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb166b53a49e393871bcb14a528792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac3d9e689f2f9c38e8fd2385e68479a.png)
您最近一年使用:0次
2 . 已知抛物线
:
的焦点
与椭圆
的右焦点重合,过
的直线交
于
、
两点,过点
且垂直于弦
的直线交抛物线的准线于点
,则下列结论正确的是( )
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fdd1989149897babe496145a3812e49.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/ac047e91852b91af639feec23a9598b2.png)
A.![]() |
B.![]() |
C.![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
解题方法
3 . 在正方体
中,点
在底面
所在的平面上运动.下列说法不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/a6d2e66f-2634-4b64-bcee-b16bdc578c6c.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/a6d2e66f-2634-4b64-bcee-b16bdc578c6c.png?resizew=162)
A.若点![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若点![]() ![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
4 . 已知椭圆
:
,经过原点
的直线
交
于
、
两点.
是
上异于
、
的一点,直线
交
轴于点
,且
.若直线
、
的斜率之积为
,则椭圆的离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/dad2a36927223bd70f426ba06aea4b45.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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cefcb44bda2c328b0623187c43fd22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
您最近一年使用:0次
解题方法
5 . 已知双曲线
过点
,离心率为
,斜率为k的直线l交双曲线C于A,B两点,且直线
的斜率之和为0.
(1)求双曲线C的方程;
(2)是否存在直线l,使得
是以P为顶点的等腰三角形,若存在,求出直线l的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
(1)求双曲线C的方程;
(2)是否存在直线l,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2024-02-19更新
|
118次组卷
|
2卷引用:河南省信阳市固始县2023-2024学年高二上学期期末考试数学试卷
6 . 已知函数
,
(其中
为自然对数的底数)、
(1)若函数
的图象与
轴相切,求
的值;
(2)设
,
、
,都有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c624cc1af5a7792fc5239665da80550d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1610bcd07b02c4ed7184ad586b88f373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0320671f8cbfbe99546bb0627715c628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191a9f1cd3402de148664b7fbe7a0c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
7 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eccef729793e6280ee574f8a2345f7b6.png)
A.![]() ![]() |
B.![]() |
C.直线![]() ![]() |
D.点![]() ![]() |
您最近一年使用:0次
2024-02-17更新
|
582次组卷
|
2卷引用:河南省许昌市2023-2024学年高二上学期期末教学质量检测数学试题
解题方法
8 . 已知数列
满足
.且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12ce286eae260841326f66865ff777a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca92b1bb8c695bd37144136ea1c887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b7adab471d41ac1b0451f07ab94aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12ce286eae260841326f66865ff777a.png)
您最近一年使用:0次
2024-02-14更新
|
319次组卷
|
2卷引用:河南省信阳市固始县2023-2024学年高二上学期期末考试数学试卷
9 . 已知棱长为1的正方体
中,E为线段
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
A.存在直线![]() ![]() ![]() ![]() |
B.存在直线![]() ![]() ![]() ![]() |
C.点![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
10 . 已知函数
,若关于x的不等式
(e是自然对数的底数)在R上恒成立,则a的取值范围______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb8bfd5636b021ba36277e247ef5139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f1467881d86dd83e90db9d24b43428.png)
您最近一年使用:0次
2024-02-13更新
|
586次组卷
|
5卷引用:河南省信阳高级中学2023-2024学年高二下学期4月月考数学试题
河南省信阳高级中学2023-2024学年高二下学期4月月考数学试题福建省莆田市第二中学2023-2024学年高二下学期返校考试数学试卷(已下线)第五章综合 第二课 提炼本章思想山东省临沂市罗庄区2024届高三上学期学科素养水平监测数学试题(已下线)压轴小题12 一组不等式的恒成立问题