名校
解题方法
1 . 下列函数中均满足下面三个条件的是( )
①
为偶函数;②
;③
有最大值
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b61adc4745f283e4072ddd762f92ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-03-31更新
|
406次组卷
|
2卷引用:安徽省池州市2024届高三上学期期末数学试题
2 . 某同学高三上学期5次月考数学成绩分别为90,100,95,110,105,则( )
A.5次月考成绩的极差为15 | B.5次月考成绩的平均数为100 |
C.5次月考成绩的方差为50 | D.5次月考成绩的40%分位数为95 |
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名校
解题方法
3 . 一家公司为了解客户对公司新产品的满意度,随机选取了名客户进行评分调查,根据评分数进行适当分组后(每组为左闭右开的区间),画出的频率分布直方图如图所示,其中有8名客户的评分数落在
内,则( )
A.图中的![]() |
B.![]() |
C.同组数据用该组区间的中点值作代表,则评分数的平均数为76.2 |
D.该公司计划邀请评分数低于第25百分位数的客户参与产品改进会议,若客户甲的评分数为71,则甲将会被邀请参与产品改进会议 |
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2024-03-21更新
|
366次组卷
|
2卷引用:河北省部分重点高中2023-2024学年高三上学期2月期末考试数学试题
4 . 将正数
用科学记数法表示为
,则
,我们把
,
分别叫做
的首数和尾数,若将
的首数记为
,尾数记为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecb96065d41d4a771f3ac4506d720ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01e75079c40bb4209e5a50c3ffbefa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14770b9325e37e920779af21b1e83544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70cb9c86788079b383e8daa8f8433847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70cb9c86788079b383e8daa8f8433847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3888740fa8b552b55b4a0c8ae4166007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2972af8c65701183de194c358b83256c.png)
A.![]() |
B.![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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5 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c087565d8eab2b0914d7e0405618afad.png)
A.![]() |
B.![]() |
C.不等式![]() ![]() |
D.对任意![]() |
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6 . (多选)已知数据
,若去掉
后剩余6个数的平均数比7个数的平均数大,记
,
,
,
的平均数与方差为
,
,记
,
,
,
的平均数与方差为
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5587aea6e1e8fc73232325868e982d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848dac3d6db7c23c58f399970b3f9b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbc29b47b83fdc5368770b7b1acb439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b42973c53907f09f2de384c42fc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20c1e5866f81c045a596079ac4a7671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e382c9bafdc5d09498b92f5248d01c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0da8a9d862e0005c44a8cb8fd262bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1295cbd36fdc55a55b549aa2dd5887.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2024-03-07更新
|
263次组卷
|
2卷引用:浙江省杭州市2023-2024学年高三上学期期末数学试题
7 . 在平面直角坐标系中,O为坐标原点,
,
,
,点M的轨迹为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8950c7bc835103d52ceffab14b6b31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec0bc3a43265b63b6964476ca327fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ade28845b2cc3152fd323ff3f63b986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
A.![]() |
B.M到直线![]() |
C.若线段![]() ![]() ![]() ![]() |
D.使![]() |
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2024-03-07更新
|
448次组卷
|
2卷引用:河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷
解题方法
8 . 已知抛物线
的焦点
到点
的距离为
,直线
经过点
,且与
交于点
(
位于第一象限),
为抛物线上
之间的一点,
为点
关于
轴的对称点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e820a33f036a3f45975eea34630bc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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名校
9 . 下列说法正确的是( )
A.向量![]() ![]() ![]() |
B.“![]() ![]() ![]() |
C.若正数a,b满足![]() ![]() ![]() |
D.已知![]() ![]() ![]() |
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