Results 1 to 3 of 3

Thread: integer solutons

  1. May 16th 2010, 10:26 AM #1
    hmmmm
    hmmmm is offline
    Senior Member
    Joined
    Dec 2008
    Posts
    288

    integer solutons

    find integer solutions, if any exist to 3x^3 + 7y^2 = 2,
    thanks for any help
    Follow Math Help Forum on Facebook and Google+
  2. May 16th 2010, 10:30 AM #2
    roninpro
    roninpro is offline
    Senior Member roninpro's Avatar
    Joined
    Nov 2009
    Posts
    485
    Take the equation modulo 3.

    3x^3+7y^2\equiv y^2\equiv 2\pmod{3}

    Anything wrong with this?
    Follow Math Help Forum on Facebook and Google+
  3. May 16th 2010, 12:58 PM #3
    hmmmm
    hmmmm is offline
    Senior Member
    Joined
    Dec 2008
    Posts
    288
    ah thanks very much for that
    Follow Math Help Forum on Facebook and Google+
« Coprime Test | How to reduce number of tables? »

Similar Math Help Forum Discussions

  1. Find an integer n for which (1+2cos(π/9))^n rounded to nearest integer is divisib...
    Posted in the Advanced Algebra Forum
    Replies: 13
    Last Post: August 3rd 2010, 03:16 AM
  2. integer?
    Posted in the Advanced Algebra Forum
    Replies: 4
    Last Post: May 30th 2010, 04:43 AM
  3. Integer roots of integer polynomials
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: December 3rd 2009, 12:39 PM
  4. Raise integer to positive integer power
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 21st 2009, 12:20 PM
  5. [SOLVED] even integer and odd integer
    Posted in the Algebra Forum
    Replies: 2
    Last Post: October 1st 2008, 08:35 PM

Search Tags


/mathhelpforum @mathhelpforum