名校
1 . 下列说法正确的有________ .(填序号)
从装有
只红球.
只白球的袋中任意取出
只球,有事件:
①“取出
只红球和1只白球”与“取出
只红球和
只白球”不互斥;
②“取出
只红球和1只白球”与“取出
只红球”互斥且对立;
③“取出
只红球”与“取出
只球中至少有
只白球”对立;
④“取出
只红球”与“取出
只白球”互斥
从装有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
①“取出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
②“取出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
③“取出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
④“取出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
您最近一年使用:0次
名校
解题方法
2 . 某企业为了解下属某部门对本企业职工的服务情况,随机访问
名职工,根据这
名职工对该部门的评分,绘制频率分布直方图(如图所示),其中样本数据分组区间为:
,
,…,
,
.
![](https://img.xkw.com/dksih/QBM/2021/8/3/2778123869134848/2782009565462528/STEM/40ebd764-6dcd-496d-b7e8-1d4a26613ec8.png?resizew=293)
(1)求频率分布直方图中
的值;
(2)从评分在
的受访职工中,随机抽取
人,求此
人的评分都在
的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7318780f0d05863f1d0b4143b639242a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57e2bfe23e15caa08f0be5eabd5a18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686c7282d079715d74fe77757464694d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf83dc956b78d5454067973fed1a33.png)
![](https://img.xkw.com/dksih/QBM/2021/8/3/2778123869134848/2782009565462528/STEM/40ebd764-6dcd-496d-b7e8-1d4a26613ec8.png?resizew=293)
(1)求频率分布直方图中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)从评分在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01865849ed69737f96ed4a45fff07223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7318780f0d05863f1d0b4143b639242a.png)
您最近一年使用:0次
2021-08-08更新
|
880次组卷
|
4卷引用:宁夏海原第一中学2020-2021学年高一下学期期末考试数学试题
名校
3 . 某校从高一年级学生中随机抽取
名学生作为样本,将他们的期中考试数学成绩(满分
分,成绩均为不低于
分的整数)分成六组:
,
,…,
后得到如图的频率分布直方图.
(1)求图中实数
的值;
(2)若该校高一年级共有学生
人,试估计该校高一年级在考试中成绩不低于
分的人数;
(3)样本中数学成绩在
与
两个分数段内的学生人数分别为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7318780f0d05863f1d0b4143b639242a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57e2bfe23e15caa08f0be5eabd5a18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf83dc956b78d5454067973fed1a33.png)
![](https://img.xkw.com/dksih/QBM/2021/8/3/2778123869134848/2782009565347840/STEM/b670cb94-2490-4022-a836-d9f832bca1b5.png?resizew=287)
(1)求图中实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若该校高一年级共有学生
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821b8672d030c240ff230a0174aa7a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3779b4ea5477aebfe85113b0de1d60.png)
(3)样本中数学成绩在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7318780f0d05863f1d0b4143b639242a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf83dc956b78d5454067973fed1a33.png)
您最近一年使用:0次
2021-08-08更新
|
894次组卷
|
2卷引用:宁夏海原第一中学2020-2021学年高一下学期期末考试数学试题
名校
解题方法
4 . 已知函数
,求
(1)求函数的最小正周期;
(2)当
,求函数的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b62030533b8ee19583032c6e440aa3c.png)
(1)求函数的最小正周期;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6057a23e5acb7c547a368f8e1651a7ee.png)
您最近一年使用:0次
2021-08-08更新
|
2945次组卷
|
6卷引用:宁夏海原第一中学2020-2021学年高一下学期期末考试数学试题
名校
解题方法
5 . 海水养殖场进行某水产品的新、旧网箱养殖方法的产量对比,收获时各随机抽取了
个网箱,测量各箱水产品的产量(单位:kg), 其频率分布直方图如下:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/170164b8-fca4-41ae-9996-aa6932729ec3.png?resizew=635)
(1)记
表示事件“旧养殖法的箱产量低于40kg”,估计
的概率;
(2)填写下面列联表,并根据列联表判断是否有
的把握认为箱产量与养殖方法有关:
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/170164b8-fca4-41ae-9996-aa6932729ec3.png?resizew=635)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)填写下面列联表,并根据列联表判断是否有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c487ba8259608d3cb24fb594ffbd7b.png)
箱产量![]() | 箱产量![]() | |
旧养殖法 | ||
新养殖法 |
![]() ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc485c58dbd6e50bfb352030f4a1c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
您最近一年使用:0次
6 . 在直角坐标系
中,直线
的参数方程为
(
为参数).在极坐标系(与直角坐标系
取相同的长度单位,且以原点
为极点,以
轴正半轴为极轴)中,曲线
的参数方程为
(
为参数).
(1)求曲线
的普通方程;
(2)设曲线
与直线
交于点
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab37666541c749d7e606c4339638801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3e93d8a1a557eae304344f295d3bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
7 . 已知曲线
的参数方程为
(t为参数),以坐标原点为极点,x轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)把
的极坐标方程化为直角坐标方程;
(2)判断
与
交点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ee5f6495cf3e67ee62574658eb581b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdebedd02b4ea57f8562443742086d3.png)
(1)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
名校
8 . 已知函数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf680fd846ab023b6e59139ff56305a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd81c758860fbebd22ff65b90f0980fe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 曲线
在点
处的切线斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-08更新
|
116次组卷
|
2卷引用:宁夏海原第一中学2020-2021学年高二下学期期末考试数学(文)试题
名校
10 . 点
的极坐标为
,则
的直角坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04f1a53a76f98fa3f9dbc3117a0fe5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-08更新
|
407次组卷
|
3卷引用:宁夏海原第一中学2020-2021学年高二下学期期末考试数学(文)试题