Results 1 to 3 of 3

Math Help - inequalities

  1. #1
    Senior Member
    Joined
    Jul 2008
    Posts
    313

    inequalities

    I am quite confident that I understand the signs of inequalities, which I understand as;

    > greater than
    < less than

    The part I am not quite sure about is if when reading inequalities you are permitted to read then both ways, i.e. from the left and from the right?

    So in this example;

    4 < -5

    - 5 is less than 4, and

    4 is greater than - 5

    in this example would it be right to read it from right to left?

    Thanks

    David
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Siron's Avatar
    Joined
    Jul 2011
    From
    Norway
    Posts
    1,250
    Thanks
    20

    Re: inequalities

    You can read 4<-5 in two ways, 4 is less than -5 or -5 is greater then 4, which is offcourse not true.

    You can read (in general) a<b in two ways:
    a is less than b or b is greater than a

    Thus, a<b and b>a are the same.
    I hope this is clear.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Mar 2011
    From
    Awetuouncsygg
    Posts
    182
    Thanks
    12

    Re: inequalities

    Yes, you can read them both ways, but do that correct.

    4 > -5 means "4 is greater than - 5" (from left to right) and "- 5 is less than 4" (form right to left)

    -2 < 3 means "-2 is less than 3" (from left to right) and "3 is greater than -2" (from right to left)
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. inequalities
    Posted in the Algebra Forum
    Replies: 7
    Last Post: August 20th 2011, 05:56 AM
  2. inequalities
    Posted in the Algebra Forum
    Replies: 0
    Last Post: March 20th 2011, 03:42 AM
  3. Inequalities
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: July 1st 2009, 05:35 AM
  4. Inequalities
    Posted in the Algebra Forum
    Replies: 4
    Last Post: June 15th 2009, 12:26 PM
  5. inequalities
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: October 14th 2008, 10:57 PM

Search Tags


/mathhelpforum @mathhelpforum