(2011•江西)函数
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784008_ST/0.png)
中自变量x的取值范围是
.
考点分析:
相关试题推荐
(2007•咸宁)用相同的小正方体搭一个几何体,使得它的主视图和俯视图如图所示,则搭这样的几何体至少需要小正方体的个数是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784007_ST/images0.png)
A.16个
B.12个
C.10个
D.8个
查看答案
(2012•宁夏)如图,一根5m长的绳子,一端拴在互相垂直的围墙墙角的柱子上,另一端拴着一只小羊A(羊只能在草地上活动),那么小羊A在草地上的最大活动区域面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784006_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784006_ST/0.png)
πm
2B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784006_ST/1.png)
πm
2C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784006_ST/2.png)
πm
2D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784006_ST/3.png)
πm
2
查看答案
(2007•咸宁)如图,四边形木框ABCD在灯泡发出的光照射下形成的影子是四边形A′B′C′D′,若AB:A′B′=1:2,则四边形ABCD的面积:四边形A′B′C′D′的面积为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784005_ST/images0.png)
A.4:1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784005_ST/0.png)
:1
C.1
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110408825378488/SYS201310191104088253784005_ST/1.png)
D.1:4
查看答案
(2007•咸宁)在平面直角坐标系中,如果mn>0,那么点(m,|n|)一定在( )
A.第一象限或第二象限
B.第一象限或第三象限
C.第二象限或第四象限
D.第三象限或第四象限
查看答案
(2007•咸宁)在一次学校举行的演讲比赛中,十位评委给其中一位选手现场打出的分数如下:9.5,9.6,9.3,9.8,9.4,8.8,9.6,9.2,9.5,9.6.则这组数据的中位数和众数分别是( )
A.9.45,9.6
B.9.5,9.6
C.9.6,9.5
D.9.55,9.6
查看答案