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若a>0,b>0,a,b的等差中项是,且α=a+,β=b+,则α+β的最小值为(...
若a>0,b>0,a,b的等差中项是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100741640885084/SYS201311031007416408850009_ST/0.png)
,且α=a+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100741640885084/SYS201311031007416408850009_ST/1.png)
,β=b+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100741640885084/SYS201311031007416408850009_ST/2.png)
,则α+β的最小值为( )
A.2
B.3
C.4
D.5
考点分析:
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