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Please Help in this 4th order

  1. Apr 15, 2010 #1
    4th order differential equation :

    ay + by'''' = c( d + e^ikx )

    Given a, b, c, d, k are constants and i = sqrt(-1)

    Is there any solution for y(x) ?
     
  2. jcsd
  3. Apr 16, 2010 #2
    It is possible to solve it. The equation is linear with constant coefficients. Just need to identify the roots of

    br4 + a = 0.
     
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