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Homework Help: Differential equations

  1. Oct 2, 2008 #1
    10. Consider the equation *) y'' + y = exp(-x^2)sec(x). Solutions of the corresponding homogeneous equation are of course cos(x) and sin(x).
    We want a particular solution yp of *).
    a) Try to use undetermined coefficients to find yp.
    b) Try to do it using variation of parameters.
    c) Both methods fail. Explain why.
  2. jcsd
  3. Oct 3, 2008 #2


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    Have you tried either (a) or (b) yet? If so, post your attempt and we'll be better able to help you.
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