Find the max. value of
max{ |x+2y-3z|, |2y-u|, |x+2u| } / max{ |x-y|, |x+2y+z|, |z+u|, |x-2u| }
where x,y,z,u are any real numbers and (x,y,z,u)≠(0,0,0,0).
試求max{|x+2y-3z|, |2y-u|, |x+2u|} / max{ |x-y|, |x+2y+z|, |z+u|, |x-2u| }
的最大值, 其中(x,y,z,u)≠(0,0,0,0).
Max. value(4)
2011-12-04 2:47 am
回答 (1)
2011-12-04 8:33 am
收錄日期: 2021-04-23 23:23:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111203000051KK00772