高中数学代数与函数一数列106
题目内容

设等差数列 http://picflow.koolearn.com/upload/papers/20140824/20140824022406528480.png的前 http://picflow.koolearn.com/upload/papers/20140824/20140824022406544297.png项和为 http://picflow.koolearn.com/upload/papers/20140824/20140824022406559388.png,已知 http://picflow.koolearn.com/upload/papers/20140824/20140824022406575433.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824022406591490.png,则数列 http://picflow.koolearn.com/upload/papers/20140824/20140824022406606478.png的公差 http://picflow.koolearn.com/upload/papers/20140824/20140824022406622321.png为   (   )

2021-09-28

A.http://picflow.koolearn.com/upload/papers/20140824/20140824022406637224.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824022406653354.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824022406669327.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824022406684206.png

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