Results 1 to 3 of 3

Math Help - Relationship between absolute values

  1. #1
    Junior Member
    Joined
    Sep 2009
    Posts
    30

    Relationship between absolute values

    Hey
    Not sure if this belongs in the calculus section but I didn't know where else to put it and it came from a calculus question anyways.

    For
    \left|y \right|=a \left|x^3\right|
    does this imply that
    a\geq0
    Because the left hand side must be non-negative, and \left|x^3\right| must be non-negative, shouldn't a also be non-negative, otherwise you end up with a negative equals a positive?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Sep 2009
    Posts
    112
    Quote Originally Posted by chug1 View Post
    Because the left hand side must be non-negative, and \left|x^3\right| must be non-negative, shouldn't a also be non-negative, otherwise you end up with a negative equals a positive?
    you basically summed it up.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Sep 2009
    Posts
    30
    Cool thanks.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: September 7th 2011, 07:11 AM
  2. Replies: 1
    Last Post: June 1st 2011, 01:47 AM
  3. Replies: 8
    Last Post: May 23rd 2010, 10:59 PM
  4. Replies: 2
    Last Post: November 8th 2009, 01:52 PM
  5. Replies: 1
    Last Post: December 3rd 2008, 06:26 PM

Search Tags


/mathhelpforum @mathhelpforum