函数y=ax3+bx在x=1处有极值-2，则a，b的值分别为

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='14226' and id < 1169815 and id<>'1169815' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='14226' and id > 1169815 and id<>'1169815' order by id asc limit 5