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    • Thread Starter

     f(x) = e^{-4x} for  x>0 and f(x) = 0 for  x<0 .

    Complete the expression for the fourier transform,  f(k) , as shown below.

     f(k) = ({1}/{sqrt(2(pi))}) * (1/X)

    Where X is not an integral and can include k.

    IE, find what  X is...

    Sorry for the poor latex...

    So, what's the problem? Write down the definition of the Fourier transform and evaluate the integral.
    • Thread Starter

    I couldnt get the right answer, because I didn't carry the negative over so I ended up with

    x = -4 - ki,

    rather than x = 4+ki...

    It's a computer input answer so if i didn't get the right answer it just rejects it.
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