满分5 >
高中数学试题 >
利用计算机产生0~1之间的均匀随机数a,则事件“3a-1<0”的概率为 .
利用计算机产生0~1之间的均匀随机数a,则事件“3a-1<0”的概率为 .
考点分析:
相关试题推荐
设函数f(x)的定义域为R,x
(x
≠0)是f(x)的极大值点,以下结论一定正确的是( )
A.∀x∈R,f(x)≤f(x
)
B.-x
是f(-x)的极小值点
C.-x
是-f(x)的极小值点
D.-x
是-f(-x)的极小值点
查看答案
已知x与y之间的几组数据如下表:
假设根据上表数据所得线性回归直线方程为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/0.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/1.png)
x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/2.png)
中的前两组数据(1,0)和(2,2)求得的直线方程为y=b′x+a′,则以下结论正确的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/3.png)
>b′,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/4.png)
>a′
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/5.png)
>b′,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/6.png)
<a′
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/7.png)
<b′,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/8.png)
>a′
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/9.png)
<b′,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834010_ST/10.png)
<a′
查看答案
在四边形ABCD中,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834009_ST/0.png)
=(1,2),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834009_ST/1.png)
=(-4,2),则该四边形的面积为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834009_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834009_ST/3.png)
C.5
D.10
查看答案
将函数f(x)=sin(2x+θ)(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834008_ST/0.png)
)的图象向右平移φ({φ>1})个单位长度后得到函数g(x)的图象,若f(x),g(x)的图象都经过点P(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834008_ST/1.png)
),则φ的值可以是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834008_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834008_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997983422/SYS201310251243409979834008_ST/4.png)
D.
查看答案