函数y=f（x）在定义域（-，3）内可导，其图像如图所示，记y=f（x）的导函数为y=f′（x），则不等式f′（x）≤0的解集为

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='14233' and id < 1170627 and id<>'1170627' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='14233' and id > 1170627 and id<>'1170627' order by id asc limit 5