已知 是可导函数，“ ”是“ 为函数 极值点”的(     )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19874' and id < 1725421 and id<>'1725421' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19874' and id > 1725421 and id<>'1725421' order by id asc limit 5