名校
1 . 已知函数
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2566503ec0f79d89fc596244504489e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 如图,已知圆台
的下底面直径
,母线
,且
,
是下底面圆周上一动点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/11/9217506a-2438-4f44-b7fc-64d4d36123cc.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270ddac9587bf1ea553914cb69595ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/11/9217506a-2438-4f44-b7fc-64d4d36123cc.png?resizew=173)
A.圆台![]() ![]() |
B.圆台![]() ![]() |
C.当点![]() ![]() ![]() ![]() |
D.![]() ![]() |
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解题方法
3 . 投掷一枚硬币(正反等可能),设投掷
次不连续出现三次正面向上的概率为
.
(1)求
,
,
和
;
(2)写出
的递推公式;
(3)单调有界原理:①若数列
单调递增,且存在常数
,恒有
成立,那么这个数列必定有极限,即
存在;②若数列
单调递减,且存在常数
,恒有
成立,那么这个数列必定有极限,即
存在.请根据单调有界原理判断
是否存在?有何统计意义?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee50575e3ebd56c4f46dd0bbf8e55d3.png)
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(3)单调有界原理:①若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5612ce06759d0f77ca029d10083f7d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed169ec40816590af52f4ff8b1f5ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63cad0f23354aa754ade482d849557fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed169ec40816590af52f4ff8b1f5ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675a2e9584f91900fa08f7808d44dcd7.png)
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4 . 记正项数列
的前
项和为
,若
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57deda4866b0d5825402b9153cdd6b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a83bd56182758d8ef1e15eb5ad3dd9f.png)
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2024-05-16更新
|
491次组卷
|
3卷引用:浙江省绍兴市第一中学2024届高三下学期5月模拟数学试题
浙江省绍兴市第一中学2024届高三下学期5月模拟数学试题重庆康德卷2024年普通高等学校招生全国统一考试高三第二次联合诊断考试数学试题 (已下线)贵州省贵阳市南明区部分学校2023-2024学年高二下学期6月联考数学试题
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5 . 斐波那契数列(Fibonacci sequence),又称黄金分割数列,因数学家莱昂纳多·斐波那契(Leonardo Fibonacci)以兔子繁殖为例子而引入,故又称为“兔子数列”,指的是这样一个数列:1、1、2、3、5、8、13、21、34、…,在数学上,斐波那契数列以如下递推的方式定义:
,
,
(
,
),已知
,则集合A中的元素个数可表示为
,又有
且
.
(1)求集合A中奇数元素的个数,不需说明理由;并求出集合B中所有元素之积为奇数的概率;
(2)求集合B中所有元素之和为奇数的概率.
(3)取其中的6个数1,2,3,5,13,21,任意排列,若任意相邻三数之和都不能被3整除,求这样的排列的个数.(如排列1,2,3,5,13,21中,相邻三数如“1,2,3”(“3,5,13”、“5,13,21”),和能被3整除,则此排列不合题意)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a404164c8d199f60d183a59b3647cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb976cc41026ce1540505e9c5f9e81a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e5ee1d004ae893eb0190b6e9a4c6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3331942d1f39489803a81d76844cc442.png)
(1)求集合A中奇数元素的个数,不需说明理由;并求出集合B中所有元素之积为奇数的概率;
(2)求集合B中所有元素之和为奇数的概率.
(3)取其中的6个数1,2,3,5,13,21,任意排列,若任意相邻三数之和都不能被3整除,求这样的排列的个数.(如排列1,2,3,5,13,21中,相邻三数如“1,2,3”(“3,5,13”、“5,13,21”),和能被3整除,则此排列不合题意)
您最近一年使用:0次
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6 . 在锐角
中,角
所对的边分别是
.已知
,
.
(1)求角
;
(2)若
是
内的一动点,且满足
,则
是否存在最大值?若存在,请求出最大值及取最大值的条件;若不存在,请说明理由;
(3)若
是
中
上的一点,且满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64962ad7ac80b078a676e70bad4ce6e.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b70494b72a951263128f2961992b9c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136cdd691e63a13b934567ddd7642d85.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8245244d6c3a1e703fb7f658defd8277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a732126df5fa76243880cc9e10cc97fd.png)
您最近一年使用:0次
2024-05-06更新
|
422次组卷
|
3卷引用:浙江省宁波市五校联盟2023-2024学年高一下学期4月期中联考数学试题
浙江省宁波市五校联盟2023-2024学年高一下学期4月期中联考数学试题吉林省通化市梅河口市第五中学2023-2024学年高一下学期6月月考数学试题(已下线)贵州省贵阳市南明区部分学校2023-2024学年高一下学期6月联考数学试题
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7 . “费马点”是由十七世纪法国数学家费马提出并征解的一个问题.该问题是:“在一个三角形内求作一点,使其与此三角形的三个顶点的距离之和最小.”意大利数学家托里拆利给出了解答,当
的三个内角均小于
时,使得
的点O即为费马点;当
有一个内角大于或等于
时,最大内角的顶点为费马点.试用以上知识解决下面问题:已知
的内角
,
,
所对的边分别为
,
,
,且设点
为
的费马点.
(1)若
,
.
①求角
;
②求
.
(2)若
,
,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e8036a881da6a4eef036529028a11d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f75231393a8a0c63d1ec1ef87eee41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b49935a67ff57cbd8cc68482262879.png)
①求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8f8a1e38db0e55b9b1934569b24e74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ec9cff8627e76b61e6474e57d7a7ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adac81bd3bf1721afb3bf51d7c53300e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2024-04-24更新
|
602次组卷
|
4卷引用:浙江省义乌市第二中学2023-2024学年高一下学期6月阶段性考试数学试题卷
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8 . 如图,在直三棱柱
中,
,
,
,侧面
的对角线交点
,点
是侧棱
上的一个动点,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645d46c17903078e0b38279353c5430d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.直三棱柱的侧面积是![]() |
B.直三棱柱的外接球表面积是![]() |
C.三棱锥![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2024-04-19更新
|
1096次组卷
|
3卷引用:浙江省杭州市西湖高级中学2023-2024学年高一下学期4月期中测试数学试题
浙江省杭州市西湖高级中学2023-2024学年高一下学期4月期中测试数学试题广西南宁市第三中学2023-2024学年高一下学期月考(三)数学试题(已下线)专题6 组合体中的外接与内切问题【练】(高一期末压轴专项)
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9 . 甲、乙两人进行知识问答比赛,共有
道抢答题,甲、乙抢题的成功率相同.假设每题甲乙答题正确的概率分别为
和
,各题答题相互独立.规则为:初始双方均为0分,答对一题得1分,答错一题得﹣1分,未抢到题得0分,最后累计总分多的人获胜.
(1)若
,
,求甲获胜的概率;
(2)若
,设甲第
题的得分为随机变量
,一次比赛中得到
的一组观测值
,如下表.现利用统计方法来估计
的值:
①设随机变量
,若以观测值
的均值
作为
的数学期望,请以此求出
的估计值
;
②设随机变量
取到观测值
的概率为
,即![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
;在一次抽样中获得这一组特殊观测值的概率应该最大,随着
的变化,用使得
达到最大时
的取值
作为参数
的一个估计值.求
.
表1:甲得分的一组观测值.
附:若随机变量
,
的期望
,
都存在,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f970f380a12c843bb4a74ff34a15b2ac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafbc94594b8c877de8883dea10e374c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69656b7a5085c9033cfb16a838c0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
①设随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88738de257f3fdf71154ebc8d4c1d14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69656b7a5085c9033cfb16a838c0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbe7f95b5d89f9409ec24536da9e826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80746e5e22851a0f1075374a3c3280ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9383b6387e1a94d4929663769ab5ab7.png)
②设随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69656b7a5085c9033cfb16a838c0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927068f621940e6731e02a0db41060bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58b2b4120cd1e093a9b3052779d5a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58b2b4120cd1e093a9b3052779d5a73.png)
题目 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
得分 | 1 | 0 | 0 | ﹣1 | 1 | 1 | ﹣1 | 0 | 0 | 0 |
题目 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
得分 | ﹣1 | 0 | 1 | 1 | ﹣1 | 0 | 0 | 0 | 1 | 0 |
附:若随机变量
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8卷引用:浙江省天域全国名校协作体2023-2024学年高三二模数学试题
浙江省天域全国名校协作体2023-2024学年高三二模数学试题山东省青岛第二中学2024届高三下学期二模考试数学试题(已下线)数学(江苏专用02)河北省重点高中2024届高三下学期5月模拟考试数学试题(一)(已下线)模块4 二模重组卷 第6套 全真模拟卷江苏省苏州实验中学2023-2024学年高二下学期5月月考数学试题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(已下线)专题03 第七章 随机变量及其分布列--高二期末考点大串讲(人教A版2019)
10 . 已知
,集合
其中
.
(1)求
中最小的元素;
(2)设
,
,且
,求
的值;
(3)记
,
,若集合
中的元素个数为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b0d89736a10c53998013df4a354396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8165d6243c2ce6dac87a9bcc2be577ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b76979d0a46e9b56e2f7f3e44c48423.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5031a3a951c4a1d1c5e9f80a5e26513.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8e702da77e0bd37abdd29d9b12992e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6b5d77069ced356d738aea8e3efb63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e56e0fa5fb1fc2a2dbd0a152812a1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d103dda0bac3393c7544c4d0c8a37e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca1d86c9f078347773f700fee49d1d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1ebce51879137ab48c506e9cdb0187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045c531b9582478b5f0ea99c7ccf686c.png)
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5卷引用:浙江省绍兴市2024届高三下学期4月适应性考试数学试卷
浙江省绍兴市2024届高三下学期4月适应性考试数学试卷(已下线)数学(九省新高考新结构卷03)(已下线)压轴题05数列压轴题15题型汇总-3上海市育才中学2023-2024学年高三下学期5月质量调研考试数学试题(已下线)拔高点突破01 集合背景下的新定义压轴解答题(四大题型)