Results 1 to 2 of 2

Math Help - Polynomial investigation

  1. #1
    Newbie
    Joined
    Nov 2007
    Posts
    9

    Polynomial investigation

    Investigate the solutions of a polynomail equation of the form az^3+bz+c=0 where at least one of teh solutions is not a real number (has i in it).
    - abitrarily choose values for a,b,c
    -all solutions must be present
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Grandad's Avatar
    Joined
    Dec 2008
    From
    South Coast of England
    Posts
    2,570

    Solution to cubic equation

    Hello summna09
    Quote Originally Posted by summna09 View Post
    Investigate the solutions of a polynomail equation of the form az^3+bz+c=0 where at least one of teh solutions is not a real number (has i in it).
    - abitrarily choose values for a,b,c
    -all solutions must be present
    Have a look at this Cubic Formula -- from Wolfram MathWorld, especially from equation 15 onwards. I think it will give you the answer you need.

    Grandad
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Software used for investigation into cuboid regions
    Posted in the Geometry Forum
    Replies: 4
    Last Post: August 27th 2010, 01:15 AM
  2. investigation of a crime
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: October 1st 2009, 07:20 AM
  3. Statistical Investigation
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: August 20th 2008, 10:45 PM
  4. Maths hypothesis and investigation
    Posted in the Statistics Forum
    Replies: 1
    Last Post: February 13th 2007, 02:20 AM
  5. nth term investigation
    Posted in the Advanced Math Topics Forum
    Replies: 2
    Last Post: October 20th 2005, 07:10 AM

Search Tags


/mathhelpforum @mathhelpforum