1 . 有两个正整数x,
,其最大公约数与最小公倍数之和等于这两个数的积与和的差,则:
(1)满足条件的数组
共有______ 个;
(2)在所有满足条件的数组
中,
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5464d439362506b5a7fd9b0db67c06.png)
(1)满足条件的数组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
(2)在所有满足条件的数组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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2 . 当x∈
时,方程
的解集是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33248aad4efe7b3e8569208e29e8219.png)
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解题方法
3 . 设
所在的平面
,
,PB、PC分别与
成45°和30°角,
,点P到BC的距离是_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad8b5dd3e2b9691ad28519e2d84f483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
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名校
4 . 如图,四边形
内接于圆O,
是圆O的直径,
和
相交于点
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d77e065e2f7a6d16f094fbfa195f2c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/ca144a76-9d61-4fd4-8de1-3f368e5ccf25.png?resizew=209)
(1)求证:
;
(2)分别延长
,
交于点
,过点
作
交
的延长线于点
,若
求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d77e065e2f7a6d16f094fbfa195f2c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/ca144a76-9d61-4fd4-8de1-3f368e5ccf25.png?resizew=209)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16dc02090b6e9263555061f14fbc8c.png)
(2)分别延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbee06d305abf6692125513dc3757f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10877ea7c2b2623365b7e7b6b975839d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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5 . 一副牌共52张有4种花色,每种花色有13张,从中任意抽牌,最小要抽( )张才能保证有4张牌是同一花色的.
A.12 | B.13 | C.14 | D.15 |
您最近一年使用:0次
名校
6 . 有三个含30°角的直角三角形,它们的大小互不相同,但均有一条长为a的边.这三个三角形按照从大到小的顺序,求其面积比.
您最近一年使用:0次
7 . 若m、n都是正实数,方程
和方程
都有实数根,则m+n的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b97c14931ac6cf5184ef7b7697e55b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffd64316ab5cd086e8b8dc8a5bfe994.png)
A.4 | B.6 | C.8 | D.10 |
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8 . 已知
为正整数.
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
不能 表示为两个以上连续整数的乘积;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
能 表示为两个连续整数的乘积,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-02-15更新
|
163次组卷
|
2卷引用:安徽省宣城市泾县中学2021年强基夏令营选拔测试数学试题
名校
9 . 把正方体的表面沿某些棱剪开展成一个平面图形(如图),请根据各面上的图案判断这个正方体是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-02-15更新
|
807次组卷
|
5卷引用:安徽省宣城市泾县中学2021年强基夏令营选拔测试数学试题
安徽省宣城市泾县中学2021年强基夏令营选拔测试数学试题(已下线)8.1 基本立体图形1(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)浙江省温州市环大罗山联盟2022-2023学年高一下学期期中联考数学试题(已下线)专题3.1基本立体图形-重难点突破及混淆易错规避(人教A版2019必修第二册)四川省南充市仪陇县2023-2024学年高一下学期5月教学质量监测数学试题
10 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ffde526ade778a7ce9d87c614726c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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