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Cubic equations with independent variables

  1. Jun 3, 2010 #1
    Hi colleages. can you help me to solve the cubic equation below:
    2N(Ep-En)hp^3(x)-3[M(x,t)(Ep-En)-2NEnh]hp^2(x)-6Enh[M(x,t)+Nh]hp(x)+Enh^2[3M(x,t)+2Nh]=0 notice that all variables in the equation are dependent on x only, except M is dependent on x and t.
    En, Ep, N and h are constants.
    i know the solution when the equation dependent on one variable, but the problem is that M dependent on two variables x and t.
    please help me and i will be very grateful for you...
     
  2. jcsd
  3. Jun 3, 2010 #2

    Mark44

    Staff: Mentor

    Last edited by a moderator: Apr 25, 2017
  4. Jun 3, 2010 #3
    i am so sorry,
     
  5. Jun 3, 2010 #4

    Mark44

    Staff: Mentor

    There is an algorithm for finding the roots of a cubic equation - see http://en.wikipedia.org/wiki/Cubic_equation. Using this algorithm might help you solve for the values of p(x) that are roots of your equation.

    You haven't said anything about p(x). What information do you have about this function?
     
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