如果复数(m2+i)(1+mi)是实数,则实数m= .
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空间点到平面的距离如下定义:过空间一点作平面的垂线,该点和垂足之间的距离即为该点到平面的距离.已知平面α,β,γ两两互相垂直,点A∈α,点A到β,γ的距离都是3,点P是α上的动点,满足p到β的距离是到p到点A距离的2倍,则点P的轨迹上的点到γ的距离的最小值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466007_ST/0.png)
B.3-2
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C.6-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466007_ST/2.png)
D.3-
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已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466006_ST/0.png)
,那么在下列区间中含有函数f(x)零点的为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466006_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466006_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466006_ST/3.png)
D.(1,2)
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已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466005_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466005_ST/1.png)
,那么sinα+cosα的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466005_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466005_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466005_ST/4.png)
D.
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466004_ST/images0.png)
若如图的程序框图输出的S是126,则①应为( )
A.n≤5
B.n≤6
C.n≤7
D.n≤8
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已知平面上不重合的四点P,A,B,C满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466003_ST/0.png)
,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965146668/SYS201310251236569651466003_ST/1.png)
,那么实数m的值为( )
A.2
B.3
C.4
D.5
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