满分5 >
高中数学试题 >
已知R上的不间断函数g(x)满足:①当x>0时,g′(x)>0恒成立;②对任意的...
已知R上的不间断函数g(x)满足:①当x>0时,g′(x)>0恒成立;②对任意的x∈R都有g(x)=g(-x).又函数f(x)满足:对任意的x∈R,都有
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825011_ST/0.png)
成立,当
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825011_ST/1.png)
时,f(x)=x
3-3x.若关于x的不等式g[f(x)]≤g(a
2-a+2)对x∈[-3,3]恒成立,则a的取值范围( )
A.a≤0或a≥1
B.0≤a≤1
C.-1≤a≤1
D.a∈R
考点分析:
相关试题推荐
设a,b,c均为正数,且2
a=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825010_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825010_ST/1.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825010_ST/2.png)
,则( )
A.a<b<c
B.c<b<a
C.c<a<b
D.b<a<c
查看答案
△ABC的外接圆的圆心为O,半径为2,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825009_ST/0.png)
且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825009_ST/1.png)
,则向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825009_ST/2.png)
在
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825009_ST/3.png)
方向上的投影为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825009_ST/4.png)
B.3
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825009_ST/5.png)
D.-3
查看答案
若第一象限内的点A(x、y)落在经过点(6,-2)且具有方向向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825008_ST/0.png)
的直线上,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825008_ST/1.png)
有( )
A.最大值
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825008_ST/2.png)
B.最大值1
C.最小值
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825008_ST/3.png)
D.最小值1
查看答案
如果f′(x)是二次函数,且f′(x)的图象开口向上,顶点坐标为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825007_ST/0.png)
,那么曲线y=f(x)上任一点的切线的倾斜角α的取值范围是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825007_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825007_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825007_ST/3.png)
D.
查看答案
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825006_ST/0.png)
,且α是第四象限的角,则tan(π-2α)=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825006_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825006_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889282576/SYS201311012315278892825006_ST/3.png)
D.
查看答案