若
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141013_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141013_ST/1.png)
=
.
考点分析:
相关试题推荐
已知抛物线y=x
2-2x-3,若点P(-2,5)与点Q关于该抛物线的对称轴对称,则点Q的坐标是
.
查看答案
如图,点B在圆锥母线VA上,且VB=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141011_ST/0.png)
VA.过点B作平行于底面的平面截得一个小圆锥,若小圆锥的侧面积为S
1,原圆锥的侧面积为S,则下列判断中正确的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141011_ST/images1.png)
A.S
1=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141011_ST/1.png)
S
B.S
1=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141011_ST/2.png)
S
C.S
1=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141011_ST/3.png)
S
D.S
1=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141011_ST/4.png)
S
查看答案
一元二次方程2x
2+px+q=0的两个根为3,4,那么因式分解二次三项式2x
2+px+q=( )
A.(x-3)(x-4)
B.(x+3)(x+4)
C.2(x-3)(x-4)
D.2(x+3)(x+4)
查看答案
要得到二次函数y=-x
2图象,需将y=-(x+1)
2-2的图象( )
A.向左平移1个单位,再向下平移2个单位
B.向右平移1个单位,再向上平移2个单位
C.向左平移1个单位,再向上平移2个单位
D.向右平移1个单位,再向下平移2个单位
查看答案
如图是由5个大小相等的正方形组成的图形,则tan∠BAC的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141008_ST/images0.png)
A.1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141008_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101191058554614131/SYS201311011910585546141008_ST/1.png)
D.
查看答案