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函数中自变量x的取值范围是( ) A.x≤3 B.x≠1 C.x≤3且x≠1 D...
函数
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中自变量x的取值范围是( )
A.x≤3
B.x≠1
C.x≤3且x≠1
D.x<3且x≠1
考点分析:
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