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设过点P(x,y)的直线分别与x轴的正半轴和y轴的正半轴交于A,B两点,点Q与点...
设过点P(x,y)的直线分别与x轴的正半轴和y轴的正半轴交于A,B两点,点Q与点P关于y轴对称,O为坐标原点,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355010_ST/0.png)
且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355010_ST/1.png)
,则点P的轨迹方程是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355010_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355010_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355010_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355010_ST/5.png)
考点分析:
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若直线y=kx+2与双曲线x
2-y
2=6的左支交于不同的两点,那么k的取值范围是( )
A.(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355009_ST/0.png)
)
B.(-1,1)
C.(
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)
D.(
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)
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已知椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355008_ST/0.png)
(a>b>0)与双曲线
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(m>0,n>0)有相同的焦点(-c,0)和(c,0),若c是a、m的等比中项,n
2是2m
2与c
2的等差中项,则椭圆的离心率是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355008_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355008_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355008_ST/4.png)
D.
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已知双曲线:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355007_ST/0.png)
,则以A(1,1)为中点的双曲线的弦所在的直线方程为( )
A.3x-y-2=0
B.x-3y+2=0
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D.不存在
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如果点P在平面区域
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上,点Q在曲线x
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A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355006_ST/1.png)
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B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355006_ST/2.png)
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C.2
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D.
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A.以A,B为焦点,短轴长为
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k米的椭圆上.
B.以A,B为焦点,实轴长为2k米的双曲线上.
C.以AB为直径的圆上.
D.以A,B为顶点,虚轴长为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100549895435593/SYS201311031005498954355005_ST/1.png)
k米的双曲线上.
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