All Questions

I'm trying to solve the following partial differential equation: $$ f(x,y) = \partial_x^2f(x,y)-\partial_y^2f(x,y) $$ for which one obvious solution would be: $$ f(x,y)=e^{2x+\sqrt{3}y} $$ An even ...

In a cell whose LanguageCategory option is True, boxes will be syntax-highlighted. Is there any way to diasble such cell-...

I am new to Mathematica and am trying to solve an equation to calculate amplitude as a function of frequency numerically. The parameters are as follows :- ...

Write a Python application to find the longest ‘A’ path on a map of capital (uppercase) letters. The map is represented as a matrix (2-dimensional list) of capital letters. Starting from any point, ...

After installing the mathematica with the official installer on manjaro , when I opened it , lots of UI texts were shown as "$Failed". However all functions works well in mathematica. What's ...

I managed to communicate via Wolfram Connected Devices Project, with the GDS2072A oscilloscope. The communication was made through the COM5 port, RS232. I successfully tested the connection with the ...

I am learning about the ANOVA test. This involves the Fisher-distribution. I know there is the ANOVA function and the ...

`The following code represents the sets of inequalities that I want to show in a region plot. It has four parameters. The acceptable range for the 4 parameters is given by:{e, 0, 10}, {Subscript[c, I],...

I am trying to take intersections of several three-dimensional regions by using the regionplot3d command. Currently thinking about how to use looping to take intersections for several 3-D regions. <...

EDIT: I think I figured out what was wrong. Since I was adding in Print[m] AFTER I ran the loop I had to clear my variables if I wanted to run the loop again. I guess my new question is, why did I ...

How can I get something like this example so that on the y-axis appears the number of tests and on the x-axis a histogram with the numbers from 1 to 6. The idea is that the bars accumulate the number ...

I have the following equations: x' = x-y y' = x+y-2xy I used the following code to do the streamplot: I apologize for only having an image, as I am using Mathematica through my school servers I cannot ...

I prepared in Mathematica some long text: text = string1 <> string2 <> ... <> stringn; (some strings contains TeX code). Then I would like to ...

I am using MaTeX for labeling which works fine with Plot but with Plot3D the label ...

I am just practicing making some new designs with Mathematica and I thought of this recently. I want to make a tear drop shape (doesn't matter the orientation) constructed of mini cubes. I am ...

Can someone help me fitting STS spectra using the Dynes formula (Phys. Rev. Lett. 41, 1509 (1978).) to find a superconducting gap? I try to fit using FindFit in Mathematica but it gives several errors....

I was planning to create an array with all capital cities in Europe using the following command: CountryData["Europe", "CapitalCity"] But ...

I use mysock = SocketConnect[...] to connect to a socket hosted by a c++ program. Then, I send a string mystr to that socket via ...

I have the following function (it is the incomplete elliptic integral of first kind) $$ F(b,g) = \int_{0}^{b} \frac{dx}{\sqrt{(1-x^2)(1-gx^2)}} $$ I would like to compute $$\frac{\partial F}{\partial ...

I am trying to solve this system of equations for $F_1$, $F_2$, $F_3$, and $F_4$ (in terms of the $C$ quantities): I enter this: ...

I’ve been trying to plot bifurcation diagram of 2D map for the system: $x_{t+1} = x_t + y_t + A x_t y_t - b x_t$ $y_{t+1} = y_t + \dfrac{x_t}{A} - x_t y_t + c y_t^2 - d y_t$ Following example by Chris ...

I have 2 coupled differential equations which I want to solve using Galerkin Method. As such, I want to substitute the dependent variables as a polynomial expansion of the independent variable, ...

I have a generic function: f[a_,b_]:=Module[{e,f,g,h}] which returns the scalar g and the list ...

I have a generic function: f[a_,b_]:=Module[{l,m,n,o,p}] How can I have returned: l, m and p by using: ...

I have this evolution equation: $\frac{d C(\mu)}{d\ln\mu}=[y(\mu)]^2C(\mu)$ and I have to find a numerical solution for $C$. The complication arises because I do not know the exact for of the function ...

I have a system of three ODEs. This system oscillates. I need to determine the frequency of each of the three solutions. My file. You can download and modify this. I'm new to Mathematica and I know ...

If I have the result ...

Can LINK addtwo.obj addtwotm.obj wstp64i4.lib /OUT:addtwo.exe actually work with Visual Studio 2019 tools, if so how? ...

I have a curve in the complex plane (a unit circle), and I want to plot the curve with a complex function applied to it ($f(z)=\sqrt{z}$) How do I go about doing that? I know how this can be done ...

What is the best way to include the 2 axis plot in Scidraw? I need it as one of a bunch of multipanel figures and when I include it with FigGraphics the second Y ...

I noticed some issue while making parallel computations with Table loop. I noticed that when one of kernels finishes its part of job, it stops working and only rest of kernels work. But when ...

I have been trying to solve a partial differential equation known as KdV (Korteweg-de Vries) equation using NDSolve. KdV equation is written as: $\frac{\partial u(x,t)}{\partial t}+\frac{\partial^3 u(...

I am trying to create a function that takes in an input $\mu$ and place that input into the replace rule for a numerical integration, as seen in the code below: ...

The websites I have visited and the texts available to me determine the mean of an unequal frequency distribution using mean = Sum(class marks x frequency) / Sum(frequency). This is an example I ...

I have some data that takes the shape {{x,y,z}...} = somedata. I also have a custom gradient which I made using ...

"12.0.0 for Microsoft Windows (64-bit) (April 6, 2019)" This can be solved by hand without too much difficulty. But ...

I want to find two functions $h_1(t), h_2(x,t)$ such that the function $h(x,t) = \frac{1}{2} (x-b)^2 h_2(x,t)+(x-b) h_1(t)+\frac{g(t)-\beta h_1(t)}{\alpha }$ satisfies the PDE $$h_t = \frac{1}{2} \...

Imagine I have this data. I want to sort it so that it takes the form: {{<larger>, <smaller>}, {<larger>, <smaller>}, ...}, Any help ...

I am completely new in Mathematica "programming" language. At the university in Electrodynamics, we have gotten a homework to visualise the equipotential surfaces with function ContourPlot3D....

Clear[a] Manipulate[ Plot[ a*x^2 + 2*x + a, {x, -40, 40}, PlotRange -> {-15, 15}], {a, -10, 10}] I want to mark the minimum value in this range with a blue ...

I'm solving this system of equations with Mathematica: ...

I wonder how I can tell Mathematica to regard the following expressions: F[a,b] and F[b,a] as being equal, so for example ...

I am trying to solve a Partial Differential Equation, but NDSolve is giving me a NDSolveValue::delpde error, and I can't figure out why Mathematica sees my PDE as a ...

I had to redo the problem because there was a mistake. With the given function from a previous problem, I was solving link, I found that the parabola created a trajectory on the graph, ie another ...

I sometimes work with surface meshes that have self-intersections (immersions rather than embeddings). MeshRegion usually doesn't have any problems dealing with ...

Expand[(a + b)^2] I have two terms here, term a ...

I'm using MaTeX to display the ticks of a stream plot. However, I would like to standardize the number of decimals displayed in this plot, that is, I would like to show just one decimal. My code is ...

Is it correct if I substitute letters A-Z for 25 expressions that are in a 5x5 matrix, run JordanDecomposition and then substitute expressions back? The process makes no progress after a day with ...

I have been solving arrays of differential equations, and recently moved to the general case, where my initial conditions are arbitrary constants (either real or complex). However when I moved from ...

I hope a similar question doesn't already exist. Some questions with the same error weren't that applicable to my case. So I need to get the first element of the list of two matrices of ...