满分5 >
高中数学试题 >
在平面直角坐标系中,两条平行直线的横截距相差20,纵截距相差15,则这两条平行直...
在平面直角坐标系中,两条平行直线的横截距相差20,纵截距相差15,则这两条平行直线间的距离为 .
考点分析:
相关试题推荐
已知函数f(x)=x
3+ax
2+bx+c的图象过点A(2,1),且在点A处的切线方程2x-y+a=0,则a+b+c=
.
查看答案
定义在R上的可导函数y=f(x)满足f(x+5)=f(-x),(2x-5)f′(x)>0.已知x
1<x
2,则“f(x
1)>f(x
2)”是“x
1+x
2<5”的
条件.
查看答案
若函数y=lnx+2x-6的零点为x
,则满足k≤x
的最大整数k=
.
查看答案
设
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235004_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235004_ST/1.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235004_ST/2.png)
是单位向量,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235004_ST/3.png)
,则向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235004_ST/4.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235004_ST/5.png)
的夹角等于
.
查看答案
若θ∈(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235003_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235003_ST/1.png)
),sin2θ=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102328042323535/SYS201311031023280423235003_ST/2.png)
,则cosθ-sinθ的值是
.
查看答案