高中数学代数与函数一数列106
题目内容

已知数列 http://picflow.koolearn.com/upload/papers/20140824/20140824023051692822.png  http://picflow.koolearn.com/upload/papers/20140824/20140824023051708607.png为等差数列，且 http://picflow.koolearn.com/upload/papers/20140824/20140824023051723423.png， http://picflow.koolearn.com/upload/papers/20140824/20140824023051739439.png， http://picflow.koolearn.com/upload/papers/20140824/20140824023051755367.png的值为(  )

2021-09-28

A.http://picflow.koolearn.com/upload/papers/20140824/20140824023051770418.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824023051786361.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824023051801412.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824023051801361.png

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