Results 1 to 3 of 3

Thread: Equation order 8 in C :

  1. July 26th 2009, 01:19 AM #1
    dhiab
    dhiab is offline
    Super Member dhiab's Avatar
    Joined
    May 2009
    From
    ALGERIA
    Posts
    521

    Equation order 8 in C :

    Solve in R :
    Follow Math Help Forum on Facebook and Google+
  2. July 26th 2009, 01:39 AM #2
    Moo
    Moo is offline
    A Cute Angle Moo's Avatar
    Joined
    Mar 2008
    From
    P(I'm here)=1/3, P(I'm there)=t+1/3
    Posts
    5,618
    Thanks
    6
    Quote Originally Posted by dhiab View Post
    Solve in R :
    z^8-z^6=z^6(z^2-1)

    So z^8-z^6-z^2+1=(z^2-1)(z^6-1)=(z-1)(z+1)(z^3-1)(z^3+1)
    =(z-1)^2(z+1)^2(z^2+z+1)(z^2-z+1)
    Follow Math Help Forum on Facebook and Google+
  3. July 26th 2009, 01:47 AM #3
    malaygoel
    malaygoel is offline
    Super Member malaygoel's Avatar
    Joined
    May 2006
    From
    India
    Posts
    648
    Quote Originally Posted by dhiab View Post
    Solve in R :
    z^8-z^6+z^2-1=0

    (z^6+1)(z^2-1)=0

    now, it can be solved using Demoivres theorem.
    Follow Math Help Forum on Facebook and Google+
« Argument and modulus | Sketch this sine graph »

Similar Math Help Forum Discussions

  1. Simplifying an equation containing both a first order and second order differential
    Posted in the Differential Equations Forum
    Replies: 2
    Last Post: September 21st 2011, 03:37 PM
  2. differential equation (2nd order)
    Posted in the Differential Equations Forum
    Replies: 0
    Last Post: November 28th 2010, 12:38 PM
  3. [SOLVED] 2nd order diff. equation
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: September 20th 2010, 01:11 PM
  4. Second Order Homogeneous Equation IVP
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: September 15th 2010, 12:38 AM
  5. Formulating a second-order ordinary differential equation as a first-order system?
    Posted in the Differential Equations Forum
    Replies: 2
    Last Post: November 25th 2008, 09:29 PM

Search Tags


/mathhelpforum @mathhelpforum