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1 vote

FourierCosCoefficient for function with singularity

I think FourierCosCoefficient is simply ignoring pole of the function at x=0. We can see it by computing indefinite integral and ...
azerbajdzan's user avatar
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6 votes

How to find a closed-form expression for this integral depending on parameter?

A change of variables can help: ...
chuy's user avatar
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8 votes

Display of nested fractions as products of fractions

Since this is for display only, how about ClearAll["Global`*"] makeNice[e_] := If[Denominator[e] =!= 1, 1/Denominator[e]·Numerator[e], e] And now you ...
Nasser's user avatar
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1 vote

Define a function whose variable is differential operator

We define an operator, that takes a polynomial in x and replaces every x by a derivative operator that acts on the variable x. To prevent that the operator is evaluated too early, we need "Hold&...
Daniel Huber's user avatar
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6 votes

Joint Moments of Stochastic Process at Different Times

You can use Expectation: ...
Domen's user avatar
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5 votes

Solve taking infinite time

Solving large systems of polynomial equations can be very difficult. The general approach involves using GroebnerBasis, which can be very slow. Here is an ...
bbgodfrey's user avatar
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1 vote

How to make the following replacement?

You can explicitly check for the presence of arguments with ContainsAny. ...
Domen's user avatar
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