名校
1 . 在信息理论中,
和
是两个取值相同的离散型随机变量,分布列分别为:
,
,
,
,
,
.定义随机变量
的信息量
,
和
的“距离”
.
(1)若
,求
;
(2)已知发报台发出信号为0和1,接收台收到信号只有0和1.现发报台发出信号为0的概率为
,由于通信信号受到干扰,发出信号0接收台收到信号为0的概率为
,发出信号1接收台收到信号为1的概率为
.
(ⅰ)若接收台收到信号为0,求发报台发出信号为0的概率;(用
,
表示结果)
(ⅱ)记随机变量
和
分别为发出信号和收到信号,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08fcbcf19c6ca72cd66c201ef43f9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4380cd57f824c5d9df1ca493cbd8cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe82ce73937d36166659f21492c825e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a870945a04cd86f2e0026fc53a2b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b0e3b00fe47801afb53ec56706c21a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b4e8e7a49dbe86419e00672d1927c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd67429e1b0f56bc66a547fc9c6eed2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5633fa4fa8837dff506561b7943715fb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d0c830d39efe08dad4f2104325b8c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a8bb9552579e3cd3c7d693ce37b445.png)
(2)已知发报台发出信号为0和1,接收台收到信号只有0和1.现发报台发出信号为0的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c8578f06897aa6fb84aa95c797d3d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d9b426bcc34a2cca2184dc1310f5e4.png)
(ⅰ)若接收台收到信号为0,求发报台发出信号为0的概率;(用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(ⅱ)记随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3719852c05eef71dd595791e3dc10de7.png)
您最近一年使用:0次
2024-06-14更新
|
649次组卷
|
4卷引用:江西省上饶市稳派上进六校联考2024届高三5月第二次联合考试数学试题
名校
解题方法
2 . 已知点
是抛物线
上不同三点,直线
与抛物线
相切.
(1)若直线
的斜率为2,线段
的中点为
,求
的方程;
(2)若
为定值,当
变动时,判断
是否为定值,若为定值,求出该定值;若不为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35644a7d25d0410409238f52c8818083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e39bd21af422662049290a3aa4841b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e325d1e4485ec4cfb3d7bb038d675d7d.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fe48905f1e58b2fe08706c2f53b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d726b14a313e000a81526162f35748.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3c5a4887dfe02b02ee90d740151e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835c6f51b4471243b5e1a3d6e74c203.png)
您最近一年使用:0次
名校
3 . 初中学过多项式的基本运算法则,其实多项式与方程的根也有密切关联.对一组变量
,幂和对称多项式
,且
;初等对称多项式
表示在
中选出
个变量进行相乘再相加,且
.例如:对
.已知三次函数
有3个零点
,且
.记
,
.
(1)证明:
;
(2)(i)证明:
;
(ii)证明:
,且
;
(3)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b85069b184b032808ce05636373b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d15873316d0c17fbcbbe376834e5697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63239fb9313458d7f86b64d2860beba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba0d57c2c8fcc1cef3a02b67d4193b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca373f163399198a6beb169fe6df5262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef4ab1ca44d62d6451f85e41258abe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5f85f6501033a93c8be7363d59c8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489340c9a2d70c00bae13b7018cad448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a93e7bb2538cf1dcb50722aa9cf0550c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38c64a6143b210aa315e0b6bfaccf94.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e856070d58b6aefce7e914426d7f95c.png)
(2)(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549ef2a5b6592308c2da9233aca63e77.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6429dd74013b8984de8dcaac9c862957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52121b304f70afcb2dfb3d4a614f7224.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d177a7489e327bff83e61ac1eeaaf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5235bf88c507cd6178e94914133d04.png)
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4 . 设
,
是非空集合,定义二元有序对集合
为
和
的笛卡尔积.若
,则称
是
到
的一个关系.当
时,则称
与
是
相关的,记作
.已知非空集合
上的关系
是
的一个子集,若满足
,有
,则称
是自反的:若
,有
,则
,则称
是对称的;若
,有
,
,则
,则称
是传递的.且同时满足以上三种关系时,则称
是集合
中的一个等价关系,记作~.
(1)设
,
,
,
,求集合
与
;
(2)设
是非空有限集合
中的一个等价关系,记
中的子集
为
的
等价类,求证:存在有限个元素
,使得
,且对任意
,
;
(3)已知数列
是公差为1的等差数列,其中
,
,数列
满足
,其中
,前
项和为
.若给出
上的两个关系
和
,请求出关系
,判断
是否为
上的等价关系.如果不是,请说明你的理由;如果是,请证明你的结论并请写出
中所有等价类作为元素构成的商集合
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b93f7aa7ba32c9dad112ae7caa10d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b076845d2b97a8b09807f232000aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558b4d40179245aa327521eeff8c2574.png)
![](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/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a15d37048f967e9420c3d117d8231d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a7c9c05b4d3eac6461747017dcb8cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7902d1a9d757df4d9bc35d45e16d892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba85c8b02a51af9a7f2121f6888de7df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b548de80bcd12b1bc37081ac69a7431b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a15d37048f967e9420c3d117d8231d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a825fd8b77fbb7342cd408968fb70ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ea1419908c307c68726c8266022584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a15d37048f967e9420c3d117d8231d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050a5bbe5ed5a5ffb338f6754a884fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04042e0bf9c6985ffc72e63134b6416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d65c189a79078617afd2f9a455ccea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5035c62eda0e9238d517fea6b5bb6f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce240043bb6d7e24a09954f7c72a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d4afc4786dd071158544fcd1f5b132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1169b97c3532be1b2a67f053a7d2c807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bc98fb66e6c435ee3f3ae838b56666.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e295975b6e7d533fca11356ef38f0877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994598ce57f0289a3cb374740e431235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf81dd43d0ab4be39344ef96aa2b25e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db6e128a3c29b8df7f8743546bb8db.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b36e3ca48d6825b91d99dc49861584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b55a10b9c9abf002dc82b2951251b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1a134d2f29b023f3355aa5b4af457d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451eedd2b6db5a8233816f51788f54a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9efeb4455e30293d412938eeea85d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ad9141b70ad7eadb9dabec40186f40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b602d8facb00e929bd7b7dbe607d724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc868066533c40faab358a931a6aeb84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be75a542de7085c49dddc2403de62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc91509afee726c4279a7767da66dadb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b602d8facb00e929bd7b7dbe607d724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b602d8facb00e929bd7b7dbe607d724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f2368d861c70f08c2721e8181954cd.png)
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解题方法
5 . 英国数学家泰勒(B.Taylor,1685—1731)发现了:当函数
在定义域内n阶可导,则有如下公式:
以上公式称为函数
的泰勒展开式,简称为泰勒公式.其中,
,
表示
的n阶导数,即
连续求n次导数.根据以上信息,并结合高中所学的数学知识,解决如下问题:
(1)写出
的泰勒展开式(至少有5项);
(2)设
,若
是
的极小值点,求实数a的取值范围;
(3)若
,k为正整数,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ba62322394a513a9e60536e424f112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c875ad8fafc41d5c82baf23bb5e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd370c3b127fbdb77b6e5c40318328d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad040ae0fab73f5dd7b1af48cd3b5f93.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a923c6ef8e8a289acf935ca73c92a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf90a3d768f2a8ff0ede2f973d1dad1.png)
您最近一年使用:0次
2024-06-04更新
|
405次组卷
|
2卷引用:江西省南昌市第十九中学2024届高三下学期第五次模拟考试数学试卷
名校
解题方法
6 . 已知椭圆
的上、下顶点分别为
椭圆
上的点到直线
的距离和其与
的左焦点的距离之比始终为
为
上一点,直线
分别交
于
记
,
的面积分别为
.
(1)求
;
(2)若
和
的横坐标异号,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31c3268f0a8fd1d76041c9abb8f0367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d61b78d69cfd82cf0d69792c977dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a334d1b952cd569ce5593227a94f1546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88f79da28a2878b27e3742dc8c92fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160bd4db735d9499328407971b7a4bad.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](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/f49bc994e2a224886f665f699ed196d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
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7 . 定义两个
维向量
,
的数量积
,
,记
为
的第k个分量(
且
).如三维向量
,其中
的第2分量
.若由
维向量组成的集合A满足以下三个条件:①集合中含有n个n维向量作为元素;②集合中每个元素的所有分量取0或1;③集合中任意两个元素
,
,满足
(T为常数)且
.则称A为T的完美n维向量集.
(1)求2的完美3维向量集;
(2)判断是否存在完美4维向量集,并说明理由;
(3)若存在A为T的完美n维向量集,求证:A的所有元素的第k分量和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3e014b5001732bc4b37be2b03c4033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00efefb7f52ad5c9dbdb180e577ee54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028076d0553b70f0fdae6beff69a10ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c5d928c389d3abb01ca33fedf17efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00da2c261a6ecd7533ffb8e153eaa506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d9e604bcc449034230149a89d746a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b4b3879d1c6debf0333008f686634e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea687406a05d37d0761cd1a3455c804f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ba4a7e65c27fb359ba7aadd49f797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cbe607b41f76db6418ce01831a1d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d9e604bcc449034230149a89d746a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdb50eea11f40d9f3c37052c45894a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57aabc9b21bc15ae35720679a7b6d1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10772b376bc43eb5c33cfd7ba9771657.png)
(1)求2的完美3维向量集;
(2)判断是否存在完美4维向量集,并说明理由;
(3)若存在A为T的完美n维向量集,求证:A的所有元素的第k分量和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912092af5b5301c659e6e86a7e858f38.png)
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2024-04-23更新
|
653次组卷
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2卷引用:2024届江西省九江市二模数学试题
名校
8 . 一座小桥自左向右全长100米,桥头到桥尾对应数轴上的坐标为0至100,桥上有若干士兵,一阵爆炸声后士兵们发生混乱,每个士兵爬起来后都有一个初始方向(向左或向右),所有士兵的速度都为1米每秒,中途不会主动改变方向,但小桥十分狭窄,只能容纳1人通过,假如两个士兵面对面相遇,他们无法绕过对方,此时士兵则分别转身后继续前进(不计转身时间).
(1)在坐标为10,40,80处各有一个士兵,计算初始方向不同的所有情况中,3个士兵全部离开桥面的最长时间(提示:两个士兵面对面相遇并转身等价于两个士兵互相穿过且编号互换);
(2)在坐标为10、20、30、……、90处各有一个士兵,初始方向向右的概率为
,设最后一个士兵离开独木桥的时间为
秒,求
的分布列和期望;
(3)若初始状态共
个士兵
,初始方向向右的概率为
,计算自左向右的第
个士兵(命名为指挥官)从他的初始方向离开小桥的概率
,以及当
取得最大值时
取值.
(1)在坐标为10,40,80处各有一个士兵,计算初始方向不同的所有情况中,3个士兵全部离开桥面的最长时间(提示:两个士兵面对面相遇并转身等价于两个士兵互相穿过且编号互换);
(2)在坐标为10、20、30、……、90处各有一个士兵,初始方向向右的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591c5b712dc14517e369be2345526fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591c5b712dc14517e369be2345526fc7.png)
(3)若初始状态共
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2def5aa62f497709e1bd8258583d62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce642b73be99b3c1a8c5dd38ec58eb28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6291d7b91f71daa0b3c4fa02dc7a5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6291d7b91f71daa0b3c4fa02dc7a5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2024-03-25更新
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2卷引用:江西省抚州市临川第一中学2024届高三下学期5月训练检测数学试题
9 . 已知
,关于x的不等式
的解集为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a42fff822c5f61fec5fcd5c8e86941e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e080d3d338e4398d91b493797eb8ce33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e0a0dde137e24c80d0afeec024f2b6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-03-14更新
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824次组卷
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2卷引用:江西省九江市同文中学多校联考2024届高三下学期3月月考数学试题
名校
10 . 已知直线
是曲线
上任一点
处的切线,直线
是曲线
上点
处的切线,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6263576e5c3f2324a8dac311476bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428d922e63d8a0838da6fdacee919ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78ccece5385affcbbe686da56409d69.png)
A.当![]() ![]() ![]() ![]() |
B.存在![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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2024-03-12更新
|
930次组卷
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3卷引用:江西省南昌市2024届高三第一次模拟测试数学试题