高中数学代数与函数一其他练习题9
题目内容

已知等差数列 http://picflow.koolearn.com/upload/papers/20140823/20140823115508569381.gif的通项公式为 http://picflow.koolearn.com/upload/papers/20140823/20140823115508600416.gif,则 http://picflow.koolearn.com/upload/papers/20140823/20140823115508616709.gif的展开式中含 http://picflow.koolearn.com/upload/papers/20140823/20140823115508647207.gif项的系数是该数列的(    )

2021-07-12

A.第http://picflow.koolearn.com/upload/papers/20140823/20140823115508756202.gif

B.第http://picflow.koolearn.com/upload/papers/20140823/20140823115508803217.gif

C.第http://picflow.koolearn.com/upload/papers/20140823/20140823115508819219.gif

D.第http://picflow.koolearn.com/upload/papers/20140823/20140823115508834222.gif

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