点P（x，y）满足 ，则y-2x的最大值与最小值分别为

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='32859' and id < 2619241 and id<>'2619241' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='32859' and id > 2619241 and id<>'2619241' order by id asc limit 5