Top new questions this week:
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I am trying to do something like …
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Given: Clear[func]; listOfLists = {{a, b}, {c, d, e}}; listOfRules = {a -> b, c -> d}; I can discern between listOfLists and listOfRules using MatchQ: …
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In Python you can make a character translation table with ‘maketrans’, passing it two strings of the same length. Then you can call ‘translate’ passing a new string and the table you just created. The …
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Let us consider in version 13.1 on Windows 10 r = Integrate[1/(x – a)/Sqrt[1 – x^2], {x, -1, 1}, Assumptions -> a \[Element] Reals] …
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Bug introduced after 9.0, persisting through 13.1. Bug report sent via email on 12/Nov/2022 I’m trying to plot the following implicit equation in 3D: …
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How could you random convex polygons where the points of the graph $A(x_1,y_1) , B(x_2,y_2), … $ come out, hopefully in rational format (a/b) in such a way that the total area of the polygon is …
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I’ve been vaguely aware of this behavior for a long time but never looked into it. Consider this sample: …
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Greatest hits from previous weeks:
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I’m trying to get the eigenvalues of a one dimensional time-independent Schrödinger equation, $-\frac{h^2}{2m_0}\frac{d^2\psi}{dx^2}+U(x)~\psi=Ei~\psi$ where U(x) is some potential and Ei is the …
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When it comes to visual analysis, large datasets or data with intricate internal details often makes plotting in 2D useless, as the outcome is either just a fraction of the full dataset, or no details …
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I would like to list all possible times in a 12-hour period, where the hour hand overlaps the minute hand completely. This is really a question about three distinct things – to be done in Mathematica …
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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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I’ve seen questions before such as “What is the best open-source equivalent for Mathematica?”, but that specific question (and that line of inquiry in general) cares more about the computer algebra …
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I have a complex expression with real positive variables only. Mathematica Input Style: …
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I recently contacted McGraw-Hill to see if they have a mechanism in place for printing out-of-print books that are still of interest. Specifically, I asked about “Power programming with Mathematica” …
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Can you answer these questions?
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I would like to calculate b in terms of c and a, in order to satisfy the following conditions: …
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Given a known point, how to analytically find the nearest point from the point to the fractal tree? The fractal tree code: …
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I have the given numbers $n1$ and $n2$. How can I make sure that these two numbers are exactly the same? Numerically, using {N[n1,40], N[n2,40]}, by increasing the …
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