高中数学代数与函数一数列106
题目内容

若两个等差数列 http://picflow.koolearn.com/upload/papers/20140824/20140824014718032480.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824014718079487.png的前 http://picflow.koolearn.com/upload/papers/20140824/20140824014718079297.png项和分别是 http://picflow.koolearn.com/upload/papers/20140824/20140824014718095388.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824014718110373.png,已知 http://picflow.koolearn.com/upload/papers/20140824/20140824014718157824.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824014718173506.png

2021-09-28

A.http://picflow.koolearn.com/upload/papers/20140824/20140824014718204382.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824014718220468.png

C.

D.http://picflow.koolearn.com/upload/papers/20140824/20140824014718251415.png

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