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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=(   )

发布时间: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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