名校
1 . 已知平面向量
均为单位向量,且
,则向量
与
的夹角为______ ,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4a309ec357e57ec8b8a5303cab6745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58704fb17a45b084446e7a5bd251ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe5a52451d18ffef2ffe52994daa6c7.png)
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2024-04-24更新
|
1415次组卷
|
3卷引用:广东省韶关市2024届高三综合测试(二)数学试题
名校
2 . 若
为
的各数位数字之和,如
,
,则
;记
,
,…,
,
,则(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d694cf50da47cf209cc204c63202e1.png)
______ ;(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7a50630285fba34f1f288d2fee651c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4625f7b03625b166ebd31f52d4acc396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee0e161c98bbc04299df0661ab24434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76beb048182bf1257db4301f5659741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6f64f96fc7031a474bf7d436bdac01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8e53ea8025dad94d129b8059aeca0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8502b8308c45d8ed61894059a8bffa18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ba2605236afc5f137664bb4f9938f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5776ec7059c208daf01ca48a34915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d694cf50da47cf209cc204c63202e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7a50630285fba34f1f288d2fee651c.png)
您最近一年使用:0次
2023-11-15更新
|
75次组卷
|
2卷引用:广东省韶关市广东北江实验学校2023-2024学年高一上学期第一次月考(10月)数学试卷
解题方法
3 . 在棱长为1的正方体
中,
是棱
的中点,
是侧面
上(含边界)的动点,且满足直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
平面
,则动点
的轨迹长度为__________ ;当动点
到平面
的距离最大时,则过点
的平面截正方体
所得到的截面面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912d03b664bbf5896427da55c5d4e0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80bbe13f5c674ba211bc31948cc91151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
您最近一年使用:0次
4 . 已知抛物线C:
的焦点为F,过F且斜率为
的直线l交抛物线C于A,B两点,则以线段AB为直径的圆D的方程为______ ;若圆D上存在两点P,Q,在圆T:
上存在一点M,使得
,则实数a的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41f24031ce79047c96d1efa32fcf7ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a34b6cc0075d4aaae12982543091dcb.png)
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解题方法
5 . 已知三棱锥
中,
为等边三角形,
,
,
,
,则三棱锥的外接球的半径为___________ ;若
、
分别为该三棱锥的内切球和外接球上的动点,则线段
的长度的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967f74b8993c61634ceed95edca05ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff008bf9d674fee28e3b4514d0b1c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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名校
解题方法
6 . 直线
与直线
平行,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ ,两平行线间的距离为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1009c19a023539c1c5b827af737a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2896000aefb338c60672bfba55cb03e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
2022-11-12更新
|
80次组卷
|
2卷引用:广东省韶关市张九龄纪念学校2022-2023学年高二上学期期中数学试题
7 . “高斯函数”为
,其中
表示不超过
的最大整数.例如:
,
.已知函数
,
,若
,则x=_____ ;不等式
的解集为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7179c645736d68c90023f83d7f11ed01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba5e494c2c83e3ddccaeb9db064d97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87a26e93874376e3bbaf6d5532075e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7dc156b631b815fea299cdf13feb4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50af11c345056215054f7cfe679939da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02e4fbda8319948741fd3e7fefbe456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c7572463225bb3b65cb371f4496440.png)
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2023-07-10更新
|
351次组卷
|
4卷引用:广东省韶关市广东北江实验学校2023-2024学年高一上学期第二次月考(12月)数学试题
8 . 已知一组样本数据分为甲、乙两小组,其中,甲小组有10个数,其平均数为60,方差为200;乙小组有40个数,其平均数为70,方差为300,则这组样本的平均数为__________ ,方差为__________ .
您最近一年使用:0次
9 . 随着社会的发展与进步,人们更加愿意奉献自己的力量,积极参与各项志愿活动.某地单位甲有10名志愿者(其中8名男志愿者,2名女志愿者),单位乙有15名志愿者(其中9名男志愿者,6名女志愿者).若从单位甲任选2名志愿者参加某项活动,则恰是一男一女志愿者的概率为____________ ;若从两单位任选一个单位,然后从中随机选1名志愿者参加某项活动,则该志愿者为男志愿者的概率为____________ (以上两空用数字作答).
您最近一年使用:0次
解题方法
10 . 若
中
的系数为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
____________ ;二项展开式中系数最大的项为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71e867ae1b288d736222f3091d9710d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889b432ec834b53eabf438b80aec6bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
2022-05-06更新
|
611次组卷
|
2卷引用:广东省韶关市武江区广东北江实验中学2022届高三下学期适应性(四)数学试题