Register to reply 
(x,x] = {x}by rukawakaede
Tags: None 
Share this thread: 
#19
Mar2011, 04:02 PM

P: 2,499

http://mathworld.wolfram.com/HalfClosedInterval.html 


#20
Mar2011, 04:18 PM

Emeritus
Sci Advisor
PF Gold
P: 9,353

No, (3,2] is the set of all real numbers x such that 3<x≤2. There are no such real numbers. Therefore, (3,2]=∅.



#21
Mar2011, 04:55 PM

P: 2,499




Register to reply 