高中数学代数与函数一数列106
题目内容

已知等比数列{ http://picflow.koolearn.com/upload/papers/20140824/20140824022633824348.png}中，各项都是正数，且 http://picflow.koolearn.com/upload/papers/20140824/20140824022633839648.png成等差数列，则 http://picflow.koolearn.com/upload/papers/20140824/20140824022633855617.png＝（   ）

2021-09-28

A.1－http://picflow.koolearn.com/upload/papers/20140824/20140824022633870344.png

B.1＋http://picflow.koolearn.com/upload/papers/20140824/20140824022633870344.png

C.3－2http://picflow.koolearn.com/upload/papers/20140824/20140824022633870344.png

D.3＋2http://picflow.koolearn.com/upload/papers/20140824/20140824022633870344.png

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