高中数学代数与函数一数列106
题目内容

数列 http://picflow.koolearn.com/upload/papers/20140824/20140824021030990408.png的前 http://picflow.koolearn.com/upload/papers/20140824/20140824021031021271.png项和为 http://picflow.koolearn.com/upload/papers/20140824/20140824021031021343.png，若 http://picflow.koolearn.com/upload/papers/20140824/20140824021031037326.png， http://picflow.koolearn.com/upload/papers/20140824/20140824021031084790.png，则 http://picflow.koolearn.com/upload/papers/20140824/20140824021031084345.png（   ）

2021-09-28

A.http://picflow.koolearn.com/upload/papers/20140824/20140824021031099395.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824021031130443.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824021031146303.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824021031162358.png

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