满分5 >
高中数学试题 >
方程x3-3x-m=0在[0,1]上有实数根,则m的最大值是( ) A.0 B....
方程x
3-3x-m=0在[0,1]上有实数根,则m的最大值是( )
A.0
B.-2
C.-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419004_ST/0.png)
D.1
考点分析:
相关试题推荐
已知圆的方程为x
2+y
2-6x-8y=0,过点A(3,5)的直线被圆所截,则截得的最短弦的长度为( )
A.2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419003_ST/0.png)
B.3
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419003_ST/1.png)
C.4
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419003_ST/2.png)
D.5
查看答案
若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419002_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419002_ST/1.png)
,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419002_ST/2.png)
,则向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419002_ST/3.png)
的夹角为( )
A.45°
B.60°
C.120°
D.135°
查看答案
“a=1”是“直线x+y=0和直线x-ay=0互相垂直”的( )
A.充分而不必要条件
B.必要而不充分条件
C.充要条件
D.既不充分也不必要条件
查看答案
设集合
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468841989/SYS201311031023444688419000_ST/0.png)
,则A∩B=( )
A.∅
B.(3,4)
C.(-2,1)
D.(4.+∞)
查看答案
设命题p:函数f(x)=lg(ax
2-x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344468701189/SYS201311031023444687011021_ST/0.png)
)的定义域为R;
命题q:不等式3
x-9
x<a对一切正实数x均成立.
如果“p或q”为真命题,“p且q”为假命题,求实数a的取值范围.
查看答案