Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Interval notation

  1. Dec 13, 2013 #1
    Can anyone please give a succinct and clear description on this? I'm a little confused...
     
  2. jcsd
  3. Dec 13, 2013 #2
  4. Dec 13, 2013 #3

    Student100

    User Avatar
    Education Advisor
    Gold Member

    http://www.purplemath.com/modules/setnotn.htm

    Set notation. This will help you read the wiki article.

    Need to know where you at with it to be able to help.

    Do you understand (a, b] means a isn't included in the interval but b is?
     
  5. Dec 15, 2013 #4

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    (a, b) means "all numbers strictly between a and b". It can also be written as [itex]\{x| a< x< b\}[/itex].

    [a, b) means "all numbers strictly between a and b and the number a. It can also be written as [itex]\{x| a\le x< b\}[/itex].

    (a, b) means "all numbers strictly between a and b and the number b. It can also be written as [itex]\{ x| a< x\le b\}[/itex].

    [a, b] means "all numbers strictlhy between a and b and both the number a and the number b. It can also be written as [itex]\{x| a\le x\le b\}[/itex].

    In short, all of these contain the interval between a and b. "[" and "]" mean "include this end point". "(" and ")" mean "do not include this point".
     
  6. Dec 15, 2013 #5
    Third, HOI certainly means (a,b], just in case this is not caught.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Interval notation
  1. Notation (Replies: 2)

  2. Question on notation (Replies: 5)

  3. Scientific Notation (Replies: 6)

  4. Order notation (Replies: 3)

  5. Notation question (Replies: 4)

Loading...