已知x 2+y 2≤25，则函数 的最大值为

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='32859' and id < 2619237 and id<>'2619237' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='32859' and id > 2619237 and id<>'2619237' order by id asc limit 5