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9h
comment Integral t^2/(1+t^4) using residues theorem
You didn't specify the integration path. More importantly, this is a site for the software Mathematica, so to get an answer you'll need to show the code you have tried.
19h
awarded  Nice Answer
23h
comment Computation of a Fresnel Diffraction pattern with Discrete Hankel Transform
This should be a comment with the answer you're referring to. The question doesn't say what post you mean. You can try to make this into an independent question by stating the problem clearly.
23h
comment Difficulties with Importing PDFs in Mathematica
@Masi It works fine for me. I can't say anything about your OS. Make sure you have a recent version of ghostscript.
1d
reviewed Close Root of a cubic is not always real
1d
reviewed Close Getting NDSolve::conarg: error from attempt to solve diffusion equation
1d
reviewed Close why do python modules load differently via mathematica?
1d
reviewed Close Weird error message when using differential-algebraic solver in NDSolve
1d
reviewed Close Hold assumption in Simplify
1d
reviewed Close How to make an expression in this case evaluated one step and stop there?
1d
reviewed Close Getting DSolve to return different solutions
1d
reviewed Close Manipulate on Mathematica Online
1d
reviewed Close Create a Dataset object, Association or SparesArray from a matrix
1d
reviewed Close Displaying each element of a varying sized list one at a time
1d
reviewed Close Unintended effect of closing square bracket on Spanish keyboard in Mathematica online
2d
comment Complex valued 2+1D PDE Schrödinger equation, numerical method for `NDSolve`?
@user21 The answer is yes, but it's a vast subject. Some good and reasonable simple applications could be found in physical chemistry and mesoscopic physics (picking some fields at random). Or maybe I don't know what you mean by "application". The better question is perhaps: where are ideal 2D rectangular geometries ever found in applications? Most applications don't have the symmetries of the rectangle.
Apr
30
comment Mirror image of a point about a line
It's not clear what you're asking. Are you asking about the maths or the software Mathematica?
Apr
30
comment Eigenelements of conductivity equation
It would probably be easiest to separate variables in polar coordinates and impose the matching condition after obtaining the general solution in the two regions (they are Bessel functions).
Apr
30
comment Mirror image of a point about a line
Please post the Mathematica code you have tried, and point out where exactly you have difficulties.
Apr
30
comment Complex valued 2+1D PDE Schrödinger equation, numerical method for `NDSolve`?
@user21 Maybe you'd be interested in this Mathematica Journal article by Michael Trott: The Sound of an Unusual Drum - if you haven't seen it already.