使
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933008_ST/0.png)
有意义的x的取值范围是
.
考点分析:
相关试题推荐
如图,C为⊙O直径AB上一动点,过点C的直线交⊙O于D,E两点,且∠ACD=45°,DF⊥AB于点F,EG⊥AB于点G,当点C在AB上运动时,设AF=x,DE=y,下列中图象中,能表示y与x的函数关系式的图象大致是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933007_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933007_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933007_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933007_ST/images3.png)
D.
查看答案
抛物线y=a(x+1)
2+2的一部分如图所示,该抛物线在y轴右侧部分与x轴交点的坐标是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933006_ST/images0.png)
A.(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933006_ST/0.png)
,0)
B.(1,0)
C.(2,0)
D.(3,0)
查看答案
如图,在菱形ABCD中,∠A=110°,E,F分别是边AB和BC的中点,EP⊥CD于点P,则∠FPC=( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933005_ST/images0.png)
A.35°
B.45°
C.50°
D.55°
查看答案
已知⊙O
1和⊙O
2的半径分别为3cm和2cm,圆心距O
1O
2=4cm,则两圆的位置关系是( )
A.相切
B.内含
C.外离
D.相交
查看答案
如图,已知⊙O的两条弦AC,BD相交于点E,∠A=70°,∠c=50°,那么sin∠AEB的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933003_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933003_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933003_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000805771693348/SYS201311030008057716933003_ST/2.png)
D.
查看答案