名校
1 . 已知函数
满足
,当
时,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c5c3f7f8c66c5deab16118ecb962e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8147893347620a7099b55a0cda797b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.png)
A.![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
2 . 如图,在各棱长均相等的正三棱柱
中,给定依次排列的6个相互平行的平面
,使得
,且每相邻的两个平面间的距离都为1.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
__________ ,该正三棱柱的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307074171069f32b5c458985cd4d9bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13811d01a0338d28753385a008f51a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72873e48255e32f560537d53798df1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fce779168f431dde197ae40cacf04fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
2024-04-08更新
|
353次组卷
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2卷引用:安徽省池州市普通高中2024届高三教学质量统一监测数学试题
3 . “
数”在量子代数研究中发挥了重要作用.设
是非零实数,对任意
,定义“
数”
利用“
数”可定义“
阶乘”
和“
组合数”,即对任意
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95f14cc089b8615edde195eb449b48b.png)
(1)计算:
;
(2)证明:对于任意
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d17cd22aac1f1f0f8acb1d0b67bb2c7.png)
(3)证明:对于任意
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d774d4ac2fb5da679ac23e0dea64da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6724c68c4206bd95683998d800f7f676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d774d4ac2fb5da679ac23e0dea64da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0dee336ed12a9b1b273d7fada509737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d774d4ac2fb5da679ac23e0dea64da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d774d4ac2fb5da679ac23e0dea64da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3361528cb2e9a12d35acc0381e12564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d774d4ac2fb5da679ac23e0dea64da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dba6a7ab114b2a921dd1099e90c8bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95f14cc089b8615edde195eb449b48b.png)
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d61962da2ebd6382d99cf5f1232c7de.png)
(2)证明:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110cb021ccb99d1a30025c66b026812b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d17cd22aac1f1f0f8acb1d0b67bb2c7.png)
(3)证明:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41228f0077b249a875e69698fefb2081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985b5678fd36804e1a28fac1c7a57982.png)
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2024-04-02更新
|
1216次组卷
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2卷引用:安徽省合肥市2024届高三第一次教学质量检查数学试题
名校
解题方法
4 . 某次比赛中,甲乙二人进入决赛并争夺冠军.比赛规则为:①每局比赛后,胜者获得3分,负者获得1分,比赛没有平局;②连续2局获胜或积分率先达到11分者可获得冠军,比赛结束.已知在单局比赛中,甲乙获胜的概率均为
.
(1)求甲乙决出冠军时比赛局数
的分布列与数学期望
;
(2)求在甲获得冠军的条件下其积分达到11分的概率
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求甲乙决出冠军时比赛局数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3baba074e8aeb6f3ea117865bbd1b.png)
(2)求在甲获得冠军的条件下其积分达到11分的概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2024-03-21更新
|
1682次组卷
|
2卷引用:安徽省六安第一中学2024届高三下学期质量检测数学试卷(一)
5 . 过抛物线
的焦点
作直线
与抛物线交于
两点,且
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8269049ffbda5333600284ee5a12f674.png)
A.直线![]() |
B.直线![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
6 . 已知矩形
中,
分别是矩形四条边的中点,以矩形中心
为原点,
所在直线为
轴,
所在直线为
轴,建立如图所示的平面直角坐标系.直线
上的动点
满足
.
(1)求直线
与直线
交点
的轨迹方程;
(2)当
时,过点
的直线
(与
轴不重合)和点
轨迹交于
两点,过点
作直线
的垂线,垂足为点
.设直线
与
轴交于点
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1ddc2801762a05d06ff72bae119358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b95463a97c60db3250cb641bf6523d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0caf56b4b164191c2394b8f1a213a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc9c5353894f2c93c205c3ac04f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2c50ffc167ed684d009303258d4b30.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/369f25d6-ae6f-4687-9caa-68600c0fc1ce.png?resizew=199)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2130848c57fdbb994e41f107329b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52486ff281aeb7dff426ae3040adcd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd6afd8d57699f5cb40ca9949fabd22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0778559e1601f19625786dc20304fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e8acea56a9f17e6ef9bbce1633497f.png)
您最近一年使用:0次
7 . 取整函数被广泛应用于数论、函数绘图和计算机领域,其定义如下:设
,不超过x的最大整数称为x的整数部分,记作
,函数
称为取整函数.另外也称
是x的整数部分,称
为x的小数部分.
(1)直接写出
和
的值;
(2)设a,
,证明:
,且
,并求在b的倍数中不大于a的正整数的个数;
(3)对于任意一个大于1的整数a,a能唯一写为
,其中
为质数,
为整数,且对任意的
,
,i,
,称该式为a的标准分解式,例如100的标准分解式为
.证明:在
的标准分解式中,质因数
(
,
,
)的指数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e3204e4dc47a448860779349efcedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575ee8b07f40772a9b87075cc609b116.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f49a0f96d2a4dcd830e826b86b00d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173c5f003f563fcbaadf6d39e4ddd8a6.png)
(2)设a,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b5471b5cd78e6b6ad2bb4a29a5b23a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e820aee29ce5ad5b6fefc10d35278589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3051234cd772b983370427936e3a3f.png)
(3)对于任意一个大于1的整数a,a能唯一写为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086b43dfd3e01b604f2dcded9e594eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5c607987b73502db63f77c9799f4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f2c7c9305b404f7363a376af101aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5747eaf96a886203a5d58db42dfe30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d89c4ce427373fe50cf612d7e240422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d72b2aa820c5ea9d988dd6d1cc44dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8412f5256b2b370e421c07f18cc732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5c607987b73502db63f77c9799f4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83788fccd28d55365ec25a7170d69148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42afc34ecc7d3dc70274fa77720d9b1a.png)
您最近一年使用:0次
名校
8 . 剪纸是一种用剪刀或刻刀在纸上剪刻花纹,用于装点生活或配合其他民俗活动的中国民间艺术.其传承赓续的视觉形象和造型格式,蕴涵了丰富的文化历史信息,表达了广大民众的社会认知、道德观念、实践经验、生活理想和审美情趣,具有认知、教化、表意、抒情、娱乐、交往等多重社会价值.现有如图所示剪纸图案,其花纹中就隐含方程为
的曲线C(称为星形线),则曲线C的内切圆半径为__________ ;以曲线C上点
为切点的直线被坐标轴截得的线段长等于__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08bc1b7db92cb8d877c90ddafb3b3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc34e72b0801752d88ec762af4e0814f.png)
您最近一年使用:0次
2024-03-14更新
|
593次组卷
|
5卷引用:安徽省安庆市2024届高三模拟考试(二模)数学试题
安徽省安庆市2024届高三模拟考试(二模)数学试题(已下线)【一题多变】曲线方程 变形化简(已下线)专题8 函数新定义问题【讲】(压轴题大全)(已下线)模块三 易错点3 不会从情境题中抽象出数学图形广东省广州市执信中学2024届高三下学期教学情况检测(三)数学试题
9 . 英国数学家泰勒发现的泰勒公式有如下特殊形式:当
在
处的
阶导数都存在时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661a2ffa74a30c0b1c0a0ea0fdc8bb3c.png)
.注:
表示
的2阶导数,即为
的导数,
表示
的
阶导数,该公式也称麦克劳林公式.
(1)根据该公式估算
的值,精确到小数点后两位;
(2)由该公式可得:
.当
时,试比较
与
的大小,并给出证明;
(3)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1d8cb672db61735be7cbcd3d50bf9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661a2ffa74a30c0b1c0a0ea0fdc8bb3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10acd6d864583617dd3e71240bf0c857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35993bd1db970330494665d925c0be7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)根据该公式估算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67aace59c071f37a444495678497ef0.png)
(2)由该公式可得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba15a427babacf319deb9c4dd8d58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea093173f74807332e08bde42f25e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd9f874878e11c3fa25143023e8f95a.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5cf9c12181dd8683944b2b30bf8e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa80dea5928f0be2b39075a434742686.png)
您最近一年使用:0次
2024-03-14更新
|
3388次组卷
|
13卷引用:安徽省蚌埠市第二中学2023-2024学年高二下学期3月月巩固检测数学试题
安徽省蚌埠市第二中学2023-2024学年高二下学期3月月巩固检测数学试题湖北省八市2024届高三下学期3月联考数学试卷江苏省连云港市东海高级中学2023-2024学年高二下学期强化班第一次月考数学试题(已下线)第10题 导数压轴大题归类(2)(高三二轮每日一题)河南省南阳市西峡县第一高级中学2023-2024学年高二下学期第一次月考数学试卷江苏省苏州市张家港市沙洲中学2023-2024学年高二下学期3月阶段性测试数学试题山西省晋城市第一中学校2023-2024学年高二下学期第二次调研考试数学试题广东省东莞市外国语学校2023-2024学年高二下学期第一次阶段性考试(4月)数学试题河南省许昌市禹州市高级中学2024届高三下学期4月月考数学试题吉林省长春市第二中学2023-2024学年高二下学期第一学程考试(4月)数学试题(已下线)压轴题05数列压轴题15题型汇总-1甘肃省兰州市第五十八中学2024届高三第二次高考仿真考试数学试题广东省深圳市2024届高三下学期三模数学试题
10 . 已知集合
中含有三个元素
,同时满足①
;②
;③
为偶数,那么称集合
具有性质
.已知集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2472afe9a850dd4ed6e2d5f0dc986ec9.png)
,对于集合
的非空子集
,若
中存在三个互不相同的元素
,使得
均属于
,则称集合
是集合
的“期待子集”.
(1)试判断集合
是否具有性质
,并说明理由;
(2)若集合
具有性质
,证明:集合
是集合
的“期待子集”;
(3)证明:集合
具有性质
的充要条件是集合
是集合
的“期待子集”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d561cdf17d3a6d7d57af719cb6100c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55de080a3c1313bbd6ea5c17307c723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2472afe9a850dd4ed6e2d5f0dc986ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccfdca384d27d0d8395068e21770157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60809c809060f8d3f7a2d13b4baf6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)试判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f640ba418f74a232666dc3fb3abfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff95c388d22eba3d62c196277b47a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
(3)证明:集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2024-03-07更新
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1882次组卷
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4卷引用:安徽省芜湖市安徽师大附中2023-2024学年高二下学期3月测试数学试题
安徽省芜湖市安徽师大附中2023-2024学年高二下学期3月测试数学试题广东省东莞中学、广州二中、惠州一中、深圳实验、珠海一中、中山纪念中学2024届高三第四次六校联考数学试题(已下线)专题1 集合新定义题(九省联考第19题模式)讲(已下线)专题1 集合新定义题(九省联考第19题模式)练