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根式(式中a>0)的分数指数幂形式为( ) A. B. C. D.
根式
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(式中a>0)的分数指数幂形式为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988165535/SYS201311012310429881655005_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988165535/SYS201311012310429881655005_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988165535/SYS201311012310429881655005_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988165535/SYS201311012310429881655005_ST/4.png)
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的定义域是( )
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B.f:x→y=
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D.f:x→y=
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设集合M={y|y=x
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下列函数中哪个与函数y=x(x≥0)是同一个函数( )
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C.
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988165535/SYS201311012310429881655000_ST/0.png)
C.
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D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988165535/SYS201311012310429881655000_ST/2.png)
⊈A
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