设Sn是等比数列{an}的前n项和，S3，S9，S6成等差数列，且a2+a5=2am，则m=_1．

题干

设S_n是等比数列{a_n}的前n项和，S₃，S₉，S₆成等差数列，且a₂+a₅=2a_m，则m=____．

上一题下一题 0.0难度选择题更新时间:2019-07-27 02:08:33

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MOVIE GUIDE THURSDAY
Rush Hour 15:00 23:00		My Life as Mcdull 9:00 13:00
①Action Movie Do you like Jackie Chan? Rush Hour is another movie of his. It’s so exciting. Come and have fun!		②Cartoon Mcdull is a little pig. He’s kind of silly but he’s very cute. Do you want to enjoy happiness with him? Be sure to watch it!
Mr. Bean 11:00 19:00		Harry Potter Ⅲ 17:00 21:00
③Comedy Rowan is a great actor. His movie Mr. Bean is coming. It’s very funny. Don’t miss it!		④Science Fiction Harry Potter has been in the wizardry school (魔法学校) for three years. He begins a new life. How is everything going?