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# Fourier transform help Watch

1. Hi,

I'm trying to compute the fourier transform for:

This makes the integrand when doing the transform:

There's a hint saying to complete the square in the exponent, so let

c.f. coefficients gives:

However in the solution, on completing the square they obtain:

But I can't see where I've gone wrong.

Thanks
2. (Original post by Chemhistorian)

You've made a sign error while factorising here. I'll look for the other errors now.

Edit:

Their solution yields:

Error on their part?
3. (Original post by Chemhistorian)
..
(Original post by Phichi)
..
If you look at the coefficient of x^2 in the given ("correct") answer, you'll see it's , but the original coefficient (in the OP) is .

So I suspect the error probably comes right at the start - probably before what's actually been posted.

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Updated: January 19, 2015
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