Results 1 to 6 of 6

Math Help - rational roots b/c

  1. #1
    Senior Member
    Joined
    Jul 2010
    Posts
    428
    Thanks
    5

    rational roots b/c

    Hi;
    When determining rational roots of a polynomial ie b/c or b/q which one is correct
    and what do the letters mean?


    Thanks,
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    12,130
    Thanks
    1012

    Re: rational roots b/c

    Quote Originally Posted by anthonye View Post
    Hi;
    When determining rational roots of a polynomial ie b/c or b/q which one is correct
    and what do the letters mean?
    most texts use \frac{p}{q}, though it doesn't really matter what letters are used ...

    Mathwords: Rational Root Theorem
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Jul 2010
    Posts
    428
    Thanks
    5

    Re: rational roots b/c

    So the letters don't stand for anything then?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    Joined
    Jun 2012
    From
    AZ
    Posts
    616
    Thanks
    97

    Re: rational roots b/c

    For a polynomial in the form a_n x^n + a_{n-1}x^{n-1} + \dots + a_1x + a_0 = 0, where a_i \in \mathbb{Z}, all possible rational roots are in the form \frac{p}{q}, where p is a factor of the constant coefficient a_0 and q is a factor of the leading coefficient a_n. Very easy to prove.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Super Member
    Joined
    Jun 2012
    From
    AZ
    Posts
    616
    Thanks
    97

    Re: rational roots b/c

    The letters are arbitrary. They don't really stand for anything.
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Senior Member
    Joined
    Jul 2010
    Posts
    428
    Thanks
    5

    Re: rational roots b/c

    Thanks thats what I was after.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Rational Roots
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: December 12th 2009, 05:55 AM
  2. Rational Roots
    Posted in the Pre-Calculus Forum
    Replies: 0
    Last Post: October 23rd 2009, 01:28 PM
  3. Rational roots
    Posted in the Algebra Forum
    Replies: 1
    Last Post: June 23rd 2008, 06:28 PM
  4. rational roots
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 26th 2008, 07:50 AM
  5. Rational Roots
    Posted in the Algebra Forum
    Replies: 1
    Last Post: October 22nd 2006, 09:29 AM

Search Tags


/mathhelpforum @mathhelpforum