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已知函數(shù)，數(shù)列滿足，且數(shù)列是遞增數(shù)列，則實(shí)數(shù)的取值范圍是  (      )

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B．

C．

D．

已知函數(shù)，數(shù)列滿足，且數(shù)列是遞增數(shù)列，則實(shí)數(shù)的取值范圍是      ▲       .

已知函數(shù)，數(shù)列滿足，且數(shù)列是單調(diào)遞增數(shù)列，則實(shí)數(shù)的取值范圍是 

已知函數(shù)，數(shù)列滿足，且數(shù)列是單調(diào)遞增數(shù)列，則實(shí)數(shù)的取值范圍是