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Homework Help: Drumskin PDE's

  1. May 27, 2008 #1
    1. The problem statement, all variables and given/known data
    Not sure if you guys can get this link
    http://www.maths.uwa.edu.au/devsite/Units/math3341-s1-2008-crawley/assignments-solutions/Sheet%204 [Broken]
    should be able to.
    Question is quesiton two.

    2. Relevant equations
    Not many besides the general seperation of solutions sort of thing but im a bit unsure how to apply that with three variables.

    3. The attempt at a solution
    In previous examples we had some symmetry that meant we could knock out say the theta dependance on something but im not sure here. I tried letting u = T(t)R(r)K(theta) and just fiddling a bit but came up trumps as i tried to fit the R function to a solution of the bessel function which we expect from whats given. I get the T(t) function as a sin + cos solution with argument lambda*c where -lambda squared is the constant i assign to the two sets of functions in seperation of variables. Thats sort of right i guess, not sure where the plus or minus comes from but then again i don't know how they get omega. I think im on the right track looking for the solution form of u i gave im just not sure how to follow through nor how to link the two constants that arise from applying seperation of variables twice.

    Hope that made sense :S

    EDIT: Nevermind, im retarded and can't read my own notes/do algebra properly. Mods can delete if you want.
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. May 27, 2008 #2
    Last edited: May 27, 2008
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