满分5 >
初中数学试题 >
(2001•山东)已知二次函数y=ax2+bx+c(a≠0)的图象如图所示,则直...
(2001•山东)已知二次函数y=ax
2+bx+c(a≠0)的图象如图所示,则直线y=ax+b与双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972021_ST/0.png)
在同一坐标系中的位置大致是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972021_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972021_ST/images2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972021_ST/images3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972021_ST/images4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972021_ST/images5.png)
考点分析:
相关试题推荐
(2001•山东)如图,从地面上C,D两处望山顶A,仰角分别为30°和45°,若C,D两处相距200m,那么山高AB为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972020_ST/images0.png)
A.100(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972020_ST/0.png)
+1)m
B.100m
C.100m
D.200m
查看答案
(2001•山东)已知:如图,△ABC中,AD⊥BC于D,下列条件:
(1)∠B+∠DAC=90°;
(2)∠B=∠DAC;
(3)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972019_ST/0.png)
;
(4)AB
2=BD•BC.
其中一定能够判定△ABC是直角三角形的有( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972019_ST/images1.png)
A.0个
B.1个
C.2个
D.3个
查看答案
(2001•山东)将二次函数
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972018_ST/0.png)
化成y=a(x+m)
2+n的形式是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972018_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972018_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972018_ST/3.png)
D.
查看答案
(2004•淄博)化简二次根式
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972017_ST/0.png)
的结果是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972017_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972017_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972017_ST/3.png)
D.
查看答案
(2007•天津)已知关于x的一元二次方程(m-2)
2x
2+(2m+1)x+1=0有两个不相等的实数根,则m的取值范围是( )
A.m>
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972016_ST/0.png)
B.m≥
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972016_ST/1.png)
C.m>
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972016_ST/2.png)
且m≠2
D.m≥
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180697201/SYS201310191054291806972016_ST/3.png)
且m≠2
查看答案