题目内容
已知f(x)=
,则f(-9)等于( )
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16566' and id < 1441255 and id<>'1441255' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16566' and id > 1441255 and id<>'1441255' order by id asc limit 5