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在抛物线y2=4x上有点M,它到直线y=x的距离为4,如果点M的坐标为(m,n)...
在抛物线y
2=4x上有点M,它到直线y=x的距离为4
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183708304772936/SYS201310241837083047729006_ST/0.png)
,如果点M的坐标为(m,n),且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183708304772936/SYS201310241837083047729006_ST/1.png)
的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183708304772936/SYS201310241837083047729006_ST/2.png)
B.1
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183708304772936/SYS201310241837083047729006_ST/3.png)
D.2
考点分析:
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