若函数 为奇函数，则 的值为（    ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16551' and id < 1390191 and id<>'1390191' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16551' and id > 1390191 and id<>'1390191' order by id asc limit 5