a2n1b2n1的知识精选

已知等差数列{an}和等比数列{bn}各项都是正数,且a1=b1,a2n+1=b2n+1,那么一定有   ( ...
问题详情:已知等差数列{an}和等比数列{bn}各项都是正数,且a1=b1,a2n+1=b2n+1,那么一定有   (   ) A.an+1≤bn+1   B.an+1≥bn+1C.an+1<bn+1    D.an+1>bn+1【回答】B知识点:数列题型:选择题...
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