1 . 直线
,当
变动时,所有直线都通过定点( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f0fc4b304974c110cfcec65636a843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知奇函数
对于
满足
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2dcc90624f573cd607f18729a761d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50727bd86875bf1e1f6a2aed398dcb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6275d8a8c9f198adb651059c83e305.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 已知随机变量
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e1f9411baa9bcbfd1fdc5ec2fbc658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f9a761c10e3757dbea1b1f4d4e42ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.2 | B.3 | C.4 | D.5 |
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4 . 由样本数据点
的散点图可知,变量
与
线性相关,求得的回归直线方程为
,且
.若去除两个数据点
和
,则剩余样本数据点纵坐标的平均值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db75ae33fb99b1997ceb38511b82bc2.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/276e65ef864c0199b80ccf7ee849025c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febbe45d3282ba9a27172929c0b866a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd750e993c677878e2ec8fe18dffd14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e800d47ed98a1b3d2751ae7189ad1d77.png)
A.3 | B.4 | C.5 | D.6 |
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解题方法
5 . 集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3c4cf09ce3cb95f48da70763879bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe156c10c39e5214f325ce8a2180858.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 .
成立的充分不必要条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca46bf75b584e565fa13130feb4be52.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知函数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fbfaecc075ca789edceac7e58b2258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1300f924272cf1781968920768023d11.png)
A.![]() | B.![]() | C.2 | D.3 |
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8 . 已知
,其中
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c3a475ce7986134d71495d35a8fcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48964891f8ea309828926f52759060f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dee5c82f630b01e21ea629eabd1ce1f.png)
A.1 | B.729 | C.6 | D.-6 |
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9 . 已知红箱内有5个红球和3个白球,白箱内有3个红球和5个白球,所有小球形状大小完全相同.第一次从红箱内取出一球后再放回去,第二次从与第一次取出的球颜色相同的箱子内取出一球,然后再放回去,依次类推,第
次从与第
次取出的球颜色相同的箱子内取出一球,然后再放回去.记第
次取出的球是白球的概率为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b00f4eb7f1bd2ccefbabf0c1dfa8f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 如图,在梯形
中,
,且
,点
为空间内任意一点,设
,
,则向量
=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/e04b235f-8959-4775-bc1f-5230efa7e2ac.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71de7c0bdb3cb6608b3a37d668bf0823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cefb3de8805e7febdf23b4e959d9711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f28b09c6074898b0bf992928336eb5b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/e04b235f-8959-4775-bc1f-5230efa7e2ac.png?resizew=158)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-11-04更新
|
327次组卷
|
3卷引用:山东省临沂市平邑县平邑县第一中学2022-2023学年高二上学期10月月考数学试题