(2007•滨州)(1)把二次函数y=-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/0.png)
x
2+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/1.png)
x+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/2.png)
代成y=a(x-h)
2+k的形式;
(2)写出抛物线y=-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/3.png)
x
2+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/4.png)
x+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/5.png)
的顶点坐标和对称轴,并说明该抛物线是由哪一条形如y=ax
2的抛物线经过怎样的变换得到的;
(3)如果抛物线y=-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/6.png)
x
2+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/7.png)
x+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780021_ST/8.png)
中,x的取值范围是0≤x≤3,请画出图象,并试着给该抛物线编一个具有实际意义的情境.(如喷水、掷物、投篮等)
考点分析:
相关试题推荐
(2007•滨州)解不等式组
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780020_ST/0.png)
把解集表示在数轴上,并求出不等式组的整数解.
查看答案
(2007•滨州)先化简,再求值:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780018_ST/0.png)
,其中a=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780018_ST/1.png)
+1
查看答案
(2007•滨州)如图,这是某地2005年和2006年粮食作物产量的条形统计图,请你根据此图判断下列说法合理的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780017_ST/images0.png)
A.2006年三类农作物的产量比2005年都有增加
B.玉米产量和杂粮产量增加的幅度大约是一样的
C.2005年杂粮产量是玉米产量的约六分之一
D.2005年和2006年的小麦产量基本持平
查看答案
(2010•贵阳)如图,AB是⊙O的直径,C是⊙O上的一点,若AC=8,AB=10,OD⊥BC于点D,则BD的长为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146578092/SYS201310191104461465780016_ST/images0.png)
A.1.5
B.3
C.5
D.6
查看答案