名校
1 . 为应对新一代小型无人机武器,某研发部门开发了甲、乙两种不同的防御武器,现对两种武器的防御效果进行测试.每次测试都是由一种武器向目标无人机发动三次攻击,每次攻击击中目标与否相互独立,每次测试都会使用性能一样的全新无人机.对于甲种武器,每次攻击击中目标无人机的概率均为
,且击中一次目标无人机坠毁的概率为
,击中两次目标无人机必坠毁;对于乙种武器,每次攻击击中目标无人机的概率均为
,且击中一次目标无人机坠毁的概率为
,击中两次目标无人机坠毁的概率为
,击中三次目标无人机必坠毁.
(1)若
,分别使用甲、乙两种武器进行一次测试.
①求甲种武器使目标无人机坠毁的概率;
②记甲、乙两种武器使目标无人机坠毁的数量为
,求
的分布列与数学期望.
(2)若
,且
,试判断在一次测试中选用甲种武器还是乙种武器使得目标无人机坠毁的概率更大?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fed1be8b7e50f18cb90077d9fce8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5db9fa0bc36e2308bd3eecd5e78351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9f0aaaa2695dff4b08d7a52e4c905e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29be23f689eb01e57963495377501257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66577f4cb97c0d2a213ab1a9a02d1324.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f98df968dec4cb1b7e44cb47a5c216.png)
①求甲种武器使目标无人机坠毁的概率;
②记甲、乙两种武器使目标无人机坠毁的数量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f2beb272e7c3342233f5cb681ac24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b70d4a3fc3e01b5a6358cf4e57578e6.png)
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3卷引用:山东省菏泽第一中学人民路校区2024届高三下学期5月月考数学试题
名校
解题方法
2 . 已知中心在原点,焦点在x轴上的圆锥曲线E的离心率为
,过E的右焦点
作垂直于x轴的直线,该直线被E截得的弦长为3.
(1)求圆锥曲线E的方程;
(2)过点
作一直线l交E于A,B两点,左焦点为
,连接
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求圆锥曲线E的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522498675d2c0610d4477c834fe6e84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80ecb6b5d5eca464b3f099513c08fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b283e4d7375d770823775e4036c9f6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a2e862cf255a10831288e5b67cb065.png)
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解题方法
3 . 设
为坐标原点,
,
,存在点P满足:
,
,且
,则
与x轴正方向夹角的余弦值的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104c7ac4a841a2a7bd3e39d2b3fb03ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3421f0c0345cf17ede6ca5ce4c50bde2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ed69aa8f33d217f47bc3df02544ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9511a3635b028d5ea7040bf5faac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a81ae22630c9d81cf544c6cac60606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 我们知道,在平面内取定单位正交基底建立坐标系后,任意一个平面向量,都可以用二元有序实数对
表示.平面向量又称为二维向量.一般地,n元有序实数组
称为n维向量,它是二维向量的推广.类似二维向量,对于n维向量,也可定义两个向量的数量积、向量的长度(模)等:设
,
,则
;
.已知向量
满足
,向量
满足
.
(1)求
的值;
(2)若
,其中
,当
且
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c2af42141367e6e9ff0296c31daa7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b3b354facacd72bc68da6ac07be453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48d974578eb15ca117e0cb1b59788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa60676891adca75eac086182a15c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2581496116ddfba6dd03722fd771d5a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5babafd9f4e5c3c222ba25a3de66794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48d974578eb15ca117e0cb1b59788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb2f5c0569962cd7c1026f388cb661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa60676891adca75eac086182a15c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4492fb816272cd60cf3456c6a064020e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa3e5481ce1f11ea4cb1d1ddc71413.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301fa5679316c282923735aff9285559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ac252e9126ab540c0102b941f0ee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cac554f22f3655ef6691b2ef821eac.png)
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解题方法
5 . 已知抛物线
的焦点
与圆
的圆心重合,若点
、
分别在
、
上运动,点
则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c156c3b344e637b4f86404f2711940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caac38b60e247d5e6e01009a8c38b22c.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0617005029053b043c673d15b1f29bdd.png)
A.当直线![]() ![]() ![]() |
B.![]() ![]() |
C.过![]() ![]() ![]() ![]() ![]() |
D.设![]() ![]() ![]() |
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6 . 定义:对于定义在区间
上的函数,若存在实数
,使得函数在区间
上单调递增(递减),在区间
上单调递减(递增),则称这个函数为单峰函数且称
为最优点.已知定义在区间
上的函数
是以
为最优点的单峰函数,在区间
上选取关于区间的中心
对称的两个试验点
,称使得
较小的试验点
为好点(若相同,就任选其一),另一个称为差点.容易发现,最优点
与好点在差点的同一侧.我们以差点为分界点,把区间
分成两部分,并称好点所在的部分为存优区间,设存优区间为
,再对区间
重复以上操作,可以找到新的存优区间
,同理可依次找到存优区间
,满足
,可使存优区间长度逐步减小.为了方便找到最优点(或者接近最优点),从第二次操作起,将前一次操作中的好点作为本次操作的一个试验点,若每次操作后得到的存优区间长度与操作前区间的长度的比值为同一个常数
,则称这样的操作是“优美的”,得到的每一个存优区间都称为优美存优区间,
称为优美存优区间常数.对区间
进行
次“优美的”操作,最后得到优美存优区间
,令
,我们可任取区间
内的一个实数作为最优点
的近似值,称之为
在区间
上精度为
的“合规近似值”,记作
.已知函数
,函数
.
(1)求证:函数
是单峰函数;
(2)已知
为函数
的最优点,
为函数
的最优点.
(i)求证:
;
(ii)求证:
.
注:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb94dc04ff686b4e3023ff3f3f0ebb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3819123c00dd8547948fd6a142d23eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62461b16d4a05da2cfdd0c9b79a9874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f89a8b5cf6996a6455375e405bfb9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef130ac86847aa71b7dcbb631b60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976f8d8750bfaf95aac23678f0bd926a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976f8d8750bfaf95aac23678f0bd926a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbba4740e36449b5c76eedd40519cbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fc0013f0aabb967d8efa25d0e90849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3449936da13a15ad19bf5c113c04a2f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f556fdf351f94bfb3d7ed2ded23fda93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34acf1ac6dfe5e76b611e465464344c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f556fdf351f94bfb3d7ed2ded23fda93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d8e0a088b964419617c5bae4b033bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acec765e99a3ac8d612a1ad0727c762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efec0433e7bdec251e52323372a5f0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5d19be359b21225331a07e6cf98d41.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538004bbc472e5dbf323325a596a7cf6.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9c33cd26d7faec943ffca1fcb449db.png)
注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a5efb1aa1c4e3f8017ffa6e5025d73.png)
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2024-04-18更新
|
1280次组卷
|
3卷引用:山东省菏泽第一中学三校区联考2024届高三下学期5月月考数学试题
名校
7 . 有一组样本数据
的平均数是
,方差是
,极差为
,则下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4430d542ab6e63baed2e527f538b47b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c85481cd7e94130ef3aa05b4a39e79cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671f43c79d612c93a6d160335e86e177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若方差![]() ![]() |
D.若![]() ![]() |
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2024-04-17更新
|
964次组卷
|
2卷引用:山东省菏泽第一中学人民路校区2024届高三下学期3月月考数学试题
名校
解题方法
8 . 黄山是中国著名的旅游胜地,有许多值得打卡的旅游景点,其中包括黄山风景区,齐云山,宏村,徽州古城等.
甲,乙,丙
人准备前往黄山风景区,齐云山,宏村,徽州古城这
个景点游玩,其中甲和乙已经去过黄山风景区,本次不再前往黄山风景区游玩.若甲,乙,丙每人选择一个或两个景点游玩,则不同的选择有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e1d0f65817ba32a732040518f41440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-13更新
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964次组卷
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3卷引用:山东省菏泽第一中学人民路校区2024届高三下学期3月月考数学试题
9 . 某农科所针对耕种深度
(单位:cm)与水稻每公顷产量(单位:t)的关系进行研究,所得部分数据如下表:
已知
,用最小二乘法求出
关于
的经验回归方程:
,
,
,数据在样本
,
的残差分别为
,
.
(参考数据:两个变量
,
之间的相关系数
为
,参考公式:
,
,
)则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
耕种深度 | 8 | 10 | 12 | 14 | 16 | 18 |
每公顷产量 | 6 | 8 | 11 | 12 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929ef3bed0a4bdd22f39e036506dc481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea7d187c73357e19968563d52439d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28fbbdbc94b9579fabdb951e0c5804c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9fe7c25ce0e0b6f2c23bb3621e3b34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1862cd371e7d69ca48d3c40d491ffb4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a247dcf1dc82e0ad0a8e288d1e304a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf80e6cc95e2dcd93a983266670ee3b9.png)
(参考数据:两个变量
![](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/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31bd6460427ac29b246bef52350348c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da681f395dbaeeb19432f63b6f1a39ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d35f886f6b590a2db330269ea9d939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa41991d2edba69a9c93c72f0e680c8a.png)
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10 . 某同学在一次数学测试中的成绩是班级第三名(假设测试成绩两两不同),成绩处于第90百分位数,则该班级的人数可能为( )
A.15 | B.25 | C.30 | D.35 |
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山东省菏泽第一中学三校区联考2024届高三下学期5月月考数学试题2024届江苏省南通市高三第二次适应性调研数学试题(已下线)9.2.2?总体百分位数的估计——课后作业(基础版)(已下线)专题22 用样本估计总体-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)专题23 统计图表 用样本估计总体-《重难点题型·高分突破》(苏教版2019必修第二册)