题目内容
设x,y满足约束条件
,若目标函数z=ax+by(a>0,b>0)的最大值为12, 则
的最小值为
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15531' and id < 2638689 and id<>'2638689' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15531' and id > 2638689 and id<>'2638689' order by id asc limit 5