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Double definite integral (Fourier transform)

  1. Jun 11, 2007 #1
    I don't know if this question should be posted here, but I'll give it a shot anyways.

    I am trying to find f(x,y), which can be obtain by doing the backward Fourier integral to F(\omega_x, \omega_y). I have 2 questions.

    1. Is there any Fortran code that could evaluate the (numerical) Fourier integral?

    2. Since the function f(x,y) is 2-dimensional, we have to do a double integral. Suppose that we evaluate first the x-integral. I have a polynimial in the denominator, but the roots of the polynomial will be functions of y. Then, how can I tell if the (simple) poles are in the upper half plane or not?
  2. jcsd
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