(2012•辽阳)函数y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103010_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•攀枝花)如下图,在平行四边形ABCD中,∠DAB=60°,AB=5,BC=3,点P从起点D出发,沿DC、CB向终点B匀速运动.设点P所走过的路程为x,点P所经过的线段与线段AD、AP所围成图形的面积为y,y随x的变化而变化.在下列图象中,能正确反映y与x的函数关系的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103009_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103009_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103009_ST/images3.png)
D.
查看答案
(2006•绍兴)已知⊙O的直径AB与弦AC的夹角为35°,过C点的切线PC与AB的延长线交于点P,则∠P等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103008_ST/images0.png)
A.15°
B.20°
C.25°
D.30°
查看答案
(2008•济宁)如图,数轴上表示1、
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103007_ST/0.png)
的对应点分别为点A、点B.若点B关于点A的对称点为点C,则点C所表示的数是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103007_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103007_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103007_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103007_ST/3.png)
D.
查看答案
已知⊙O
1、⊙O
2的半径分别为3cm、8cm.若⊙O
1与⊙O
2相交,则两圆的圆心距d的值可以为( )
A.2cm
B.3cm
C.5cm
D.8cm
查看答案
(2006•苏州)如图,给出了过直线外一点画已知直线的平行线的方法,其依据是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230657535510300/SYS201310212306575355103005_ST/images0.png)
A.同位角相等,两直线平行
B.内错角相等,两直线平行
C.同旁内角互补,两直线平行
D.两直线平行,同位角相等
查看答案