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Constructing A Differential Equation From A Solution Set

  1. Sep 17, 2013 #1
    1. The problem statement, all variables and given/known data

    y = c1e3xcos(2x)+c2e3xsin(2x)+c3+c4x


    2. Relevant equations

    Differential Equations.

    3. The attempt at a solution
    I am having trouble what the roots are for the c3, and c4 parts. I know they are a repeated root, but is it just k= 0? It seems like it would work, but I am not sure.
     
  2. jcsd
  3. Sep 17, 2013 #2

    ehild

    User Avatar
    Homework Helper
    Gold Member

    You are on the right track. What is the differential equation you got? If the solution of it agrees with the given one, you solved the problem.

    ehild
     
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