math question

2010-11-08 4:39 pm
Let A be a nonempty bounded subset of R such that supA = 6 and inf A = 2.

Let

S ={x/y− xy : x is belong toA, y in the interval [1/2,1)}

Determine the supremum and infimum of S with proof.

回答 (1)

2010-11-09 4:49 am
✔ 最佳答案
==========================================================

圖片參考:http://img535.imageshack.us/img535/3674/51584163.png


2010-11-08 20:49:25 補充:
http://img535.imageshack.us/img535/3674/51584163.png


收錄日期: 2021-04-23 23:23:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101108000051KK00224

檢視 Wayback Machine 備份