Top new questions this week:
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A functional square root of a function $g$ is another function $f$ such that $g=f\circ f$. According to that article, there is a systematic approach to finding a functional square root that involves ...
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Bug introduced in 12.1 or earlier and persisting through 12.1.1 or later
[CASE:4615361]
Note: A worse problem existed in 12.0 for inputs greater than 8 and of precisions less than 43.66; 12.1 fixed ...
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Sometimes the simplest things are the most difficult, I need to make a presentation, and I thought to do it in Mathematica, I wanted to do a demonstration too, well...this is the Rutherford's equation
...
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@JimBelk asked in
Interpolating an Antiderivative
how to find a numerical antiderivative.
I gave an answer that uses NDSolve with the default method for integrating
$y'=f(x,y)$.
However for ...
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This is the a list of set.
data = {{"A"}, {"J"}, {"Q"}, {"G", "H"}, {"I", "O"},
{"B", "C", "E", ...
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all.
I need some suggestion on this problem.
I have a very long list of rules, using this list of rules I want to see how some elements evolve as I successively apply the next rules on the previous ...
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If there are grammatical or terminological errors in the following description, please help correct:
In some problems, it is necessary to find out what minimum number of exchanges can change a list ...
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Greatest hits from previous weeks:
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When importing a data file what are the comment symbols for Mathematica?
That is, given a file like this
blabla
bulbul
1 2 6 54 7 ...
..
what symbol do I have to put in front of header lines so ...
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I am new to Mathematica, and using version 8.0.
I would like to calculate the 2D Fourier Transform of an Image with Mathematica and plot the magnitude and phase spectrum, as well as reconstruct the ...
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I would like to display an electromagnetic (EM) wave. I have written code that works, but it does not "shade" the area between the graph and the axes. Both the Filling and EdgeForm commands are ...
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Here is a start.
MapIndexed[Text[Reverse[First[RealDigits[Pi,10,252]]][[Tr@#2]],#]&,
Table[{t Cos[t],t Sin[t]},{t,0,16Pi,0.2}]]//Graphics
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I need to apply Van Gogh's stroke brush effect to a random image
Take the following image as an example:
Thank you so much if you could help!
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I recently came across this video: Mathematically correct breakfast, which shows how a bagel can be neatly sliced into two identical linked halves.
I'd like to try this with Mathematica. Here's a ...
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This week, the market people from my work wanted to put QR codes in shopping cart handles, but when they tested it, the QR code did not work. I noted that the cylindrical curvature (even small) ...
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Can you answer these questions?
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I'm using a simulation software (mumax3) which outputs OVF_2.0 files. It can either export binary or text files. The binary files are usually much smaller than the text files. I would like to use the ...
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I'm trying to solve:
$\partial _{z} U(z,t) = i \sqrt{d} P(z,t)$
$\partial _{t} P(z,t) = -P(z, t) + i \sqrt{d} U(z,t) + i \Omega_{c}(t)S(z, t)$
$\partial _{t} S(z,t) = i \Omega_{c}(t)P(z, t)$
For the ...
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I am reading a physics book which has discussed one approach towards solving the differential equation
$$
\frac{d^2 x(t)}{dt^2} = Cx(t)
$$
as follows:
Using Mathematica to solve the equation. I ...
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