已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040010_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040010_ST/1.png)
的值为
.
考点分析:
相关试题推荐
已知函数f(x+1)是定义在R上的奇函数,若对于任意给定的不等实数x
1、x
2,不等式(x
1-x
2)[f(x
1)-f(x
2)]<0恒成立,则不等式f(1-x)<0的解集为( )
A.(1,+∞)
B.(0,+∞)
C.(-∞,0)
D.(-∞,1)
查看答案
已知函数f(x)的部分图象如图所示,则f(x)的解析式可能为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/images0.png)
A.f(x)=2cos(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/0.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/1.png)
)
B.f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/2.png)
cos(4x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/3.png)
)
C.f(x)=2sin(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/4.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/5.png)
)
D.f(x)=2sin(4x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040008_ST/6.png)
)
查看答案
实数x,y满足不等式组
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040007_ST/0.png)
,且z=ax+y(a>0)取得最小值的最优解有无穷多个,则实数a的取值范围是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040007_ST/1.png)
B.1
C.2
D.无法确定
查看答案
如图所示,一个空间几何体的主视图和俯视图都是边长为1的正方形,侧视图是一个直径为1的圆,那么这个几何体的表面积为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040006_ST/images0.png)
A.4π
B.3π
C.2π
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102344469404072/SYS201311031023444694040006_ST/0.png)
π
查看答案
等差数列{a
n}中,已知a
5+a
7=10,S
n是数列{a
n}的前n项和,则S
11=( )
A.45
B.50
C.55
D.60
查看答案