已知函数f（x）的导函数为f′（x），且满足f（x）=2xf′（2）+cosx，则f′（2）=（　　）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='14362' and id < 1185434 and id<>'1185434' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='14362' and id > 1185434 and id<>'1185434' order by id asc limit 5