All Questions

I want to get the value of each item in the following list and keep the structure of the list, get the result ...

I have a function of 4 variables that is defined like this, ...

I'm trying to compute a double sum... For scalars, it seems to be working fine. Here is an example: ...

I have to evaluate different versions of Newton's method and the article where those equations come from have function defined within the method. For eg. ...

I wish to solve the initial value kdv equation with a boundary condition that particles are fixed at the end points. Below is my code. ...

I have a "4D" plot (3D + color) that I want to increase the point size of the points. Seems easy enough right? Just use the following is what I thought: ...

i have 4 staff in my office work in shift, the shift devided in three part s3 (morning 5AM to 13PM) s2 (afternoon 13PM to 09.00PM) s1 (night 09.00PM to 05.00AM) in one month let say 30 days, i have ...

...

The documentation for Mathematica's Ticks option says that you can specify the ticks for an axis by passing a function rather than a plain list description. The ...

My question here is very computational. My problem is in mathematical physics, so I want to ask the community what kind of software they use to do the following computation if there is any? Let $$L_{...

In my test, I found that the built-in function LegendreP of MMA is not as fast as the user-defined function. MMA should have already compiled and optimized the ...

I developed a Graph with 100,000 nodes and 402,000 edges. However, I can't see it because the output is truncated: Also, when I try FullForm I get memory error, even with a 32 CPUs, 120GB RAM + 8 ...

Consider the following ...

I wish to manipulate a parametric curve with a parameter being the end-point like the following: ...

I have a large list of graphs where each node has a dictionary. I'd like to query that list like a database, ie. I have a graph and want to find examples that contain it as a subgraph (and where the ...

I have a set of data that Line enjoys quite well, however, Tube seems to throw something of a tantrum when I deliver the same ...

I pretend to use DictionaryLookup[{"Language", complex_Pattern}] but can not achieve it finally to get it with like three layers ... Specially, I tried ...

I define a function with a condition like so. ClearAll[foo]; foo[expr_] /; FreeQ[expr, bar] := expr Such that foo[12] returns ...

Setting I am dealing with a box of spheres, all having the same radius and inserted into a finite box size without any overlaps. Along a given direction $\mathbf v$, I am trying to find: (a) The two ...

I want to plot an R function that covers all 4 subcases. For example, R = Rd if gamma2 > 2 && xmax < gamma1, R = Rdr, if gamma2 <=2, xmax I tried which and piecewise function but it ...

I have a system of two recursive equations with two unknowns A[n] and B[n] which apparently Mathematica can't solve RSolve not ...

Assume we have the following series: 1 - x^2/6 + x^4/120 - x^6/5040 + x^8/362880 Can I evaluate the radius of convergence for both of them? in Mathematica? In ...

The question is to find and sketch the solution of the following initial value problem: $$(x-y)dx+(3x+y)dy=0$$ and for $x=3$ we have $y=-2$. I was able to find an implicit solution using ...

I use atan2 function in my calculations. The results are as follows: Matlab has the unwrap function, and it copes well with the correction of such plots. How to do it in Mathematica?

I want a FormFunction to show a history of inputs, by default an empty list. But once the submit is hit, the form should be reloaded with the history shown on top. ...

Inspired by Henry Segerman's developing fractal curves, I decided to try to convince Mathematica to do something similar. The inspiration for cf, f, and g below came from How to make this Dragon Curve?...

I tried to run the following code ...

How do I let mathematica compute a tensor contraction like $\delta_{ab}\delta_{bc}$ with an output $\delta_{ac}$ efficiently? I tried TensorContract and TensorReduce but they were not helpful. ...

A trivial example would be f[x_]:=x Nest[f, 7, n] which would of course be 7 because it is independent of ...

I wanted to display all the decades (from 1 to 10^8 like 1 ,10, 10^2, 10^3 etc) in LogLinearPlot and also tried the solution of enter link description here. And my code is something like this: ...

I am defining a pattern to be used as a test, that itself depends on an argument. For instance, I might want to check that something appears in a given list: ...

FinancialData seems to be losing information. For example in the documentation it says: ...

I have solved following equation using ParametricNDSolve $$ \frac{\mathrm d^2y}{\mathrm dx^2} + \left(a + \frac{2}{\pi} b\ \arctan x\right)y = 0 $$ ...

I am trying to solve following differential equation $$\frac{d^2y}{dx^2}+(a+\frac{2}{\pi}b\hspace{3pt}\tan^{-1}x)\hspace{2pt}y=0$$ To solve it in mathematica I wrote the following code ...

I would like to see the difference between 450 RON and 100EUR converted to RON on 1st of every month back to 4 years. possibly with a cumulated chart...

There are many symbols for understanding internet-related properties: $NetworkConnected, PingTime, ...

Does anyone know the algorithm that the function SavitzkyGolayMatrix implements? Unusually, the help page does not spell out an explicit formula or the algorithm ...

How can I use NotebookImport for grabbing "ExampleSection" cells? ...

I'm experiencing some strange behavior when using Export and Printout3D on the entire object created below. Exporting each part individually or using Printout3D work just fine. Also, for some reason ...

FindSequenceFunction[{2, 4, 6, 7, 14, 29, 18, 5, 5, 2, 4}] SystemException["MemoryAllocationFailure"] $Version "12.0.0 ...

I am trying to solve the following differential equation: $$x^{2}P''(x) + 2x P'(x)+[\omega^{2}x^{2}+2]P(x)=0\,,$$ defined for $x>x_{0}>0$ and with the following boundary conditions $$f(x_{0})=...

Even though Image3D supports a variety of data types (Bit, Byte, ...

I have a Mathematica notebook that works perfectly, generating a Scala tuning file and downloading it as a Cloud Object to my local computer. I converted the code to run in the Wolfram Cloud, and all ...

Consider the following functional : $$ I(x,s) =\int_0^\infty\mathrm dy \frac{F(x + \mathrm iy, s) − F(x −\mathrm iy, s)}{\mathrm e^{2πy}-1}, $$ where $ F(z, s) = \dfrac{\sin^2[π\Gamma(z)/(2z)]}{z^s} ...

I am trying to use Compile to make my program faster but I get this errors: ...

Regarding my previous question, which command I can use to obtain the numerical solutions of a general two-variable equation: f[x_, y_] := 0 for some specific ...

It might be a trivial question but I haven't been able to find solution myself. Suppose that I have a calculation whose rather long output that is dependent in some variable e.g. ...

I keep getting errors from NIntegrate that seem to stem from precision/accuracy settings. So it is natural to start playing around with settings like ...

I am trying to fit a polynomial to the data listed as {{0,6.67},{6,17.33},{10,42.67},{13,37.33},{17,30.1},{20,29.31},{28,28.74}}. When I use ...

This question seems to imply that it is not possible. However, it is about six years old. I wonder if more recent versions of Mathematica make graded backgrounds ...