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| bio | website | |
|---|---|---|
| location | ||
| age | 25 | |
| visits | member for | 1 year, 1 month |
| seen | May 16 at 12:57 | |
| stats | profile views | 7 |
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Nov 5 |
comment |
Interpolating a function of two variables chris: works like a charm! Too bad it's only a comment and I can't accept it... :-) |
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May 22 |
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Finding ranges of a parameter for which a function is always positive That's exactly what I was looking for! Thank you! |
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Apr 17 |
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Coulomb potential as a Fourier transform I can't reproduce the result, if I copy your code and paste it into a new Mathematica workbook I get: -(Sinh[m r]/(4 [Pi] r)) however, this is clearly the way to go! :-) Answer accepted! |
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Apr 17 |
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Coulomb potential as a Fourier transform I'm fine with the logs, but the EulerGamma is completely unexpected! |
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Apr 17 |
comment |
Coulomb potential as a Fourier transform @F'x In 2D it fails to evaluate the output with the mass term. In 3D it gets stuck for ages thinking and then gives the input as output (not able to solve it, I suppose). I remember that in 2D the mass is not needed for convergence, so I've tried and the output is: 1/2 (-HeavisideTheta[-x] (2 EulerGamma + Log[-x - I y] + Log[-x + I y]) - HeavisideTheta[x] (2 EulerGamma + Log[x - I y] + Log[x + I y])) while I was expecting: $k \ln(r)$ |
