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设集合A=[0,),B=[,1],函数f (x)=若x∈A,且f[f (x)]∈...
设集合A=[0,
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),B=[
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,1],函数f (x)=
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若x
∈A,且f[f (x
)]∈A,则x
的取值范围是( )
A.(0,
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]
B.[
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,
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]
C.(
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,
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)
D.[0,
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]
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