满分5 >
高中数学试题 >
已知向量=(,1),=(0,-1),=(k,).若与共线,则k= .
已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/0.png)
=(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/1.png)
,1),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/2.png)
=(0,-1),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/3.png)
=(k,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/4.png)
).若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/5.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162010_ST/6.png)
共线,则k=
.
考点分析:
相关试题推荐
已知双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162009_ST/0.png)
(b>0)的一条渐近线的方程为y=2x,则b=
.
查看答案
在△ABC中.若b=5,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162008_ST/0.png)
,sinA=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162008_ST/1.png)
,则a=
.
查看答案
已知点A(0,2),B(2,0).若点C在函数y=x
2的图象上,则使得△ABC的面积为2的点C的个数为( )
A.4
B.3
C.2
D.1
查看答案
某车间分批生产某种产品,每批的生产准备费用为800元.若每批生产x件,则平均仓储时间为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162006_ST/0.png)
天,且每件产品每天的仓储费用为1元.为使平均每件产品的生产准备费用与仓储费用之和最小,每批应生产产品( )
A.60件
B.80件
C.100件
D.120件
查看答案
执行如图所示的程序框图,若输入A的值为2,则输入的P值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214050376016222/SYS201310232140503760162005_ST/images0.png)
A.2
B.3
C.4
D.5
查看答案