满分5 >
高中数学试题 >
下列四个图形中,不是以x为自变量的函数的图象是( ) A. B. C. D.
下列四个图形中,不是以x为自变量的函数的图象是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263856719/SYS201311012227582638567001_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263856719/SYS201311012227582638567001_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263856719/SYS201311012227582638567001_ST/images2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263856719/SYS201311012227582638567001_ST/images3.png)
考点分析:
相关试题推荐
下列关系中正确的个数为( )
①0∈0;②∅⊈{0}; ③{0,1}⊆{0,1};④{a,b}={b,a}
A.1
B.2
C.3
D.4
查看答案
已知椭圆C:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153021_ST/0.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153021_ST/1.png)
=1(a>b>0)的左.右焦点为F
1、F
2,离心率为e.直线l:y=ex+a与x轴.y轴分别交于点A、B,M是直线l与椭圆C的一个公共点,P是点F
1关于直线l的对称点,设
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153021_ST/2.png)
=λ
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153021_ST/3.png)
.
(Ⅰ)证明:λ=1-e
2;
(Ⅱ)确定λ的值,使得△PF
1F
2是等腰三角形.
查看答案
如图,已知点F(1,0),直线l:x=-1,P为平面上的动点,过P作直线l的垂线,垂足为点Q,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153020_ST/0.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153020_ST/1.png)
.
(1)求动点P的轨迹C的方程;
(2)过点F的直线交轨迹C于A、B两点,交直线l于点M,已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153020_ST/2.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101222758263715360/SYS201311012227582637153020_ST/3.png)
,求λ
1+λ
2的值.
查看答案
直线l:y=kx+1与双曲线C:2x
2-y
2=1的右支交于不同的两点A、B.
(I)求实数k的取值范围;
(II)是否存在实数k,使得以线段AB为直径的圆经过双曲线C的右焦点F?若存在,求出k的值;若不存在,说明理由.
查看答案
如图,四棱锥P-ABCD的底面ABCD为一直角梯形,其中BA⊥AD,CD⊥AD,CD=AD=2AB,PA⊥底面ABCD,E是PC的中点.
(1)求证:BE∥平面PAD;
(2)若BE⊥平面PCD:
①求异面直线PD与BC所成角的余弦值;
②求二面角E-BD-C的余弦值.
查看答案