1 . 7名同学排队照相.
(1)若排成一排照,甲、乙、丙三人必须相邻,有多少种不同的排法?
(2)若排成一排照,7人中有4名男生,3名女生,女生不能相邻,有多少种不同的排法?
(1)若排成一排照,甲、乙、丙三人必须相邻,有多少种不同的排法?
(2)若排成一排照,7人中有4名男生,3名女生,女生不能相邻,有多少种不同的排法?
您最近一年使用:0次
名校
解题方法
2 . 求下列各式的值:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb28056d319c2e0b28038a91bc64e11.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb28056d319c2e0b28038a91bc64e11.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf13a6addfa297824463ae6d77ce378.png)
您最近一年使用:0次
2024-02-03更新
|
369次组卷
|
2卷引用:重庆市黔江中学校2023-2024学年高一上学期12月月考数学试卷
3 . 回答下面两题:
(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a27710f7fc0ee5a40b20e2d6fe2a842.png)
(2)计算:已知
,则
=
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a27710f7fc0ee5a40b20e2d6fe2a842.png)
(2)计算:已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4faebb708e3614d4cf8144fc49951757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbb99046c45b769079eb98a08e83312.png)
您最近一年使用:0次
2024-01-29更新
|
648次组卷
|
4卷引用:重庆市黔江中学校2023-2024学年高一上学期11月月考数学试题
重庆市黔江中学校2023-2024学年高一上学期11月月考数学试题(已下线)专题04 指数函数与对数函数1-2024年高一数学寒假作业单元合订本江西省部分学校2023-2024学年高一上学期月考数学试题(已下线)4.1指数
名校
解题方法
4 . (1)已知斜率为负的直线
过点
,且与两坐标轴围成的面积是54,求直线
的方程;
(2)在
中,已知
边上的中线所在直线的方程依次是
与
,求
所在直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577f34450607debe6186e7e1c523e43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995079b25ea0714624bf6cf9d645f92a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2caf6048aa0807d8ba591963ff6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
,直线
.
(1)求证:对
,直线
与椭圆
总有两个不同交点;
(2)直线
与椭圆
交于
两点,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69daca955a565fa537347dd0d93783f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98592e0f2fbd50a18abf290254910a1.png)
(1)求证:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b5544e6bbd816c45db57f740c5e8c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483fb4cafaf60282217a6f2650e94b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-01-09更新
|
741次组卷
|
3卷引用:重庆市黔江中学校2023-2024学年高二上学期11月考试数学试题
重庆市黔江中学校2023-2024学年高二上学期11月考试数学试题江苏省南京市励志高级中学2023-2024学年高二上学期期末模拟数学试题(已下线)2.2.2 椭圆的性质(十八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
名校
解题方法
6 . 已知函数.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5c9dd749202f50f605cc804bedbe1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84a25527e54ee2614e3b5e99ef8a3d4.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36183977fcdb1a87a5c7cef17133e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
您最近一年使用:0次
名校
7 . 如图,在正三棱柱
中,
,
,
分别为
,
,
的中点,
,
.
(1)证明:
平面
.
(2)若
平面
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9093f560e24e5f05bc4454a5ec7ab489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/4a9e27ab-eccc-42a6-8efe-128174f4e6ef.png?resizew=139)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f687c40c3b65923237e3a96ea593e65a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914d46f7e72b55d2ff3d9bc38e02b31d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f94bf6140206c527ca23425ede214d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914d46f7e72b55d2ff3d9bc38e02b31d.png)
您最近一年使用:0次
2023-11-13更新
|
278次组卷
|
5卷引用:重庆市黔江中学校2023-2024学年高二上学期12月月考数学试卷
8 . 已知
的顶点
,
边上的中线
所在直线的方程为
,
边上的高
所在直线的方程为
.
(1)求直线
的方程.
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6329198247b9c39bb31f0ce7e08f1f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b683c0866e725bd30dd41c31149635cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044cfca7b534fa44075ded7f1a6aa038.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
9 . 已知集合
,函数
,记
的定义域为集合B.
(1)求集合B.
(2)当
时,求
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417e051da66cb7d40a654aeee065c6b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b05129b74f99c03f5ee599ee4a0ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求集合B.
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
您最近一年使用:0次
名校
10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf222f60735bbe6c3a2815940fc83ae6.png)
(1)若关于x的不等式
的解集为
,求a,
的值;
(2)已知
,当
时,
恒成立,求实数a的取值范围;
(3)定义:闭区间
的长度为
,若对于任意长度为1的闭区间D,存在
,求正数a的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf222f60735bbe6c3a2815940fc83ae6.png)
(1)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b8a984f628ab312420a600d3bade26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc296c74c60e46c30d99344144e0ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520a8afb71f6d0d59de3b552466ca82b.png)
(3)定义:闭区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf7f7a157dbd3cf94f95e32a354f381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c54705d32dc6820f1a90eec2225dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a529484fb32f9423c6b31c6a8f33bff.png)
您最近一年使用:0次
2022-12-17更新
|
983次组卷
|
6卷引用:重庆市黔江中学校2023-2024学年高一上学期11月月考数学试题