2014高三·四川·竞赛
1 . 设在
的方格表的第
行第
列所填的数为
,
.则表中共有五个1的填表方法总数为______ (用具体数字作答).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954253b16a82489bb0e152543428c68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cea71f85df9370063f74aadff1989f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70bd4029c61d2f61aec6aa83cd59d730.png)
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解题方法
2 . 如图,在正方体
中,
分别为棱
的中点.
的截面.(只需写出作图过程,不用证明)
(2)请求出截面分正方体上下两部分的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ae536809b1161fd4e83fdc7f42be96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548d64146122e344b7d30bf0dbedb374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba446c8c4a5f93fa23dc21acd4cb1920.png)
(2)请求出截面分正方体上下两部分的体积之比.
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3 . 已知曲线
在曲线上点
处切线的斜率
,过点
作y轴的平行线交曲线于
.过
作曲线的切线与
轴交于点
过
作与
轴平行的直线交曲线于
仿此不断地这样作图(如图所示),得到点列
记
求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3e5ee1aea0d8cd930d0faf6fe9a449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26707d778d9c03c52ccb232a86576f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a76bb34228ad9ea882570edeb1845c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916a1f8772ee0918e3891ad35c969d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3fee9d208eed8ae7a9ed7070000191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3fee9d208eed8ae7a9ed7070000191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96edcbf6b1d3a97a4500ac7e2db7ebe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac64da7f096fea95c25cfe54fe83d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b31731cd4e66607f0d6721bef3a7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bafd59bee06d5488859c6cc3f34215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5d3e1f43cc7386becd2f5f2f16a04c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14ed46ec49309979f9391bbe9cda3be.png)
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096456048517120/2097363383058432/STEM/b7eb3a3fa0c24555b2c8f782d548ba25.png?resizew=219)
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4 . 将
这16个正整数随机地填入
棋盘的16个格子中(每格填写一数),则使每行、每列填数之和皆为偶数的概率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a74ea6eb01f701a385cd1c1db36aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb9d60d456560e9bac66c8b20c49bb1.png)
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5 . 将“马”“上”“成”“功”这四个字填在一个5×5的方格表中,每个小方格内至多填1个字,“马”“上”始终按从左往右的顺序填写,“成”“功”也始终按从左往右的顺序填写,且“马”“上”必须在同一行或按从上往下的顺序在同一列,或者“成”“功”必须在同一行或按从上往下的顺序在同一列.则不同的填法种数为_______ (用数字作答).
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6 . 将1,2,3,4,5,6,7,8,9这9个数随机填入
的方格表中,每个小方格恰填写一个数,且所填数各不相同,则使每行、每列所填数之和都是奇数的概率是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e329a94337ada7c88a4fad9b92f0eb.png)
![](https://img.xkw.com/dksih/QBM/2018/12/10/2093628058075136/null/STEM/50ff08a0a99c4080984539a19bc884e3.png?resizew=190)
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解题方法
7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7f673cf793364aad2543ee8ae06228.png)
(1)请在网格纸中画出
的简图,并写出函数的单调区间(无需证明);
(2)定义函数
在定义域内的
,若满足
,则称
为函数
的一阶不动点,简称不动点;若满足
,则称
为函数
的二阶不动点,简称稳定点.
①求函数
的不动点;
②求函数
的稳定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7f673cf793364aad2543ee8ae06228.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/3dd251f6-1acf-44cf-b925-66705e04e25c.png?resizew=210)
(1)请在网格纸中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)定义函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de4841073ba41dc0e7b976759c3cd4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a52dc0a7f95a39091a2f11d80cc8579f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a576aa37d6f504669b40b7b38cb92694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
①求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
②求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
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8 . 在平面直角坐标系上,已知点
,
,
是平面上的一个动点,设
,
,满足
.
(1)求
的取值范围;
(2)求点
的轨迹,并画出它的图像.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654159e5670167bd400ad8bf02d57632.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2428a66ef7d3a2325fd3e74a0997a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b0ba5c937b27a27b5ef5ab9e51a935.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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9 . 为了调查全市学生的数学高考成绩,随机地抽取某中学甲、乙两班各10名同学,获得成绩数据如下(单位:分).
甲:132,108,112,121,113,121,118,128,118,129;
乙:133,107,120,113,122,114,128,118,129,127.
(1)画出甲、乙两班学生数学成绩的茎叶图,并根据茎叶图判断哪个班的平均水平较高;
(2)若数学成绩不低于120分,则称为“优秀”,求从这20名学生中随机选取三人,至多有一人是优秀的概率;
(3)以这20人的样本数据来估计整个学校的总体成绩,若从该校(人数很多)任选三人,记
表示抽到优秀学生的人数,求
的分布列及数学期望.
甲:132,108,112,121,113,121,118,128,118,129;
乙:133,107,120,113,122,114,128,118,129,127.
(1)画出甲、乙两班学生数学成绩的茎叶图,并根据茎叶图判断哪个班的平均水平较高;
(2)若数学成绩不低于120分,则称为“优秀”,求从这20名学生中随机选取三人,至多有一人是优秀的概率;
(3)以这20人的样本数据来估计整个学校的总体成绩,若从该校(人数很多)任选三人,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
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10 . 已知坐标平面内点
与直线
,动点
到点
的距离为
,到
的距离为
,若
,
(1)求
点轨迹方程并画出图形;
(2)过
作倾斜角为
的直线
,交轨迹
于
、
两点,设
,求
表达式及
为何值时,
取最大、最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d521c9bf37ce287bc559b016d79e1101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2977eea43a781e06d93e04a395a309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e067be545a0178382625422a2e67621d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f5b3fdab107f1dd9bc76e3cb078f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345ad702b0a5784d867e1470c69c72fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345ad702b0a5784d867e1470c69c72fb.png)
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