数学奥林匹克高中训练题_207
全国
高三
竞赛
2019-01-22
519次
整体难度:
适中
考查范围:
竞赛知识点
数学奥林匹克高中训练题_207
全国
高三
竞赛
2019-01-22
519次
整体难度:
适中
考查范围:
竞赛知识点
一、填空题 添加题型下试题
填空题-单空题
|
适中(0.65)
1. 已知
是半径为2的
的一条直径,
与
内切于点,
与
内切、与
外切,且与
切于点
.若
的半径是
半径的3倍,则
的半径为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8490512bd6fd2f9b7fdddd210ba02b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5ab74296abcbcf994c02b5834cd699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
【知识点】 纯几何方法
您最近一年使用:0次
填空题-单空题
|
适中(0.65)
3. 如图,在矩形
中,
,
,点
在线段
上,且
.现分别沿
、
将
、
翻折,使得点
落在线段
上.此时,二面角
的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd3b58d32346a8d31bc90adc67d37b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23df84c1190b2233e3dce2e67c750642.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/f86355f0-70a1-486f-98af-87e3baa8c467.png?resizew=297)
【知识点】 空间中距离和角的计算
您最近一年使用:0次
填空题-单空题
|
适中(0.65)
6. 已知
、
为非零的不共线的向量.设
.定义集
.当
时,若对任意的
,不等式
恒成立,则实数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b887f0b62d987a2604868aae937517b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612082c90bfed5446d46c8254b1a761a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662cfa127ee55e931b8e0e1310e0f79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4113eb2e33bc6ca3ff397748951d7b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c08dec8783df7a637119ad1f37b145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
【知识点】 向量的坐标表示,数量积 直线与二次曲线方程及性质
您最近一年使用:0次
填空题-单空题
|
适中(0.65)
7. 设
、
分别为椭圆
(
)的左、右焦点,过
的直线与椭圆
交于
、
两点,
,且
,直线
与椭圆
交于
、
两点,
、
为椭圆
上异于
、
的两点,且直线
与
交于点
,直线
与
交于点
.则直线
的斜率为______ .
![](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/ab0fe9059acc47d2447576e1260c4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/f27978d1f45f5561b77748870bd3d41d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f0da59665ee656a3781f9c485ef8d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350e954f629c1901a5cec03558319e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
【知识点】 直线与二次曲线方程及性质
您最近一年使用:0次
填空题-单空题
|
适中(0.65)
8. 记
(
为素数,
)为“好数”.若在
进制下,100与23的差为好数,则
的所有可能取值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c908e17a6bf79d25829394344475f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
【知识点】 整数与整除 p进制进位制及p进制表示
您最近一年使用:0次
二、解答题 添加题型下试题
解答题-问答题
|
适中(0.65)
10. 已知
、
分别为
轴、
轴上的动点,
,
,
.
(1)求动点
的轨迹
;
(2)已知
(
,
)为轨迹
外一动点,
,
、
分别与曲线
切于点
、
,直线
、
分别与直线
交于点
、
,证明:以
为直径的圆过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6a33c743b9bd50c2c07b14a5bfdd05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4166df45100adac488ad6edf3ad760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ddc9def3718a99c57037b077f63557.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8530bca5123179cfede86d03738495e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c925c4283740ce6cc412c1c5f57b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f850deea2f02f5c910aa29a5705e5127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd24f3c4bc9f9a75d4b28630bb630d2b.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/49b50357a6545cae8348e3059312f520.png)
【知识点】 直线与二次曲线方程及性质
您最近一年使用:0次
解答题-问答题
|
适中(0.65)
15. 将正整数1,2,…,10填于正五角星的十个顶点处,使得每条直线上所填四个数之和相等,问:这种填数方案是否存在?若存在,请给出填数方案的个数(经过旋转或对称之后能重合的方案视为同一种方案);若不存在,请说明理由.
【知识点】 递推法
您最近一年使用:0次
试卷分析
整体难度:适中
考查范围:竞赛知识点
试卷题型(共 15题)
题型
数量
填空题
8
解答题
7
试卷难度
细目表分析 导出
题号 | 难度系数 | 详细知识点 | 备注 |
一、填空题 | |||
1 | 0.65 | 纯几何方法 | 单空题 |
2 | 0.65 | 不等式估计法 | 单空题 |
3 | 0.65 | 空间中距离和角的计算 | 单空题 |
4 | 0.65 | 组合计数问题 | 单空题 |
5 | 0.65 | 数列求和 | 单空题 |
6 | 0.65 | 向量的坐标表示,数量积 直线与二次曲线方程及性质 | 单空题 |
7 | 0.65 | 直线与二次曲线方程及性质 | 单空题 |
8 | 0.65 | 整数与整除 p进制进位制及p进制表示 | 单空题 |
二、解答题 | |||
9 | 0.65 | 不等式估计法 | 问答题 |
10 | 0.65 | 直线与二次曲线方程及性质 | 问答题 |
11 | 0.65 | 函数的单调性 调整法 (放缩法) 比较法 | 问答题 |
12 | 0.65 | 调整法 (放缩法) | 问答题 |
13 | 0.65 | 纯几何方法 | 问答题 |
14 | 0.4 | 构造法 | 问答题 |
15 | 0.65 | 递推法 | 问答题 |