All Questions

I have the data which appears like And I decided to use three Gaussian curves to fit it. (This code allows me to manipulate all three curves and put in best guesses for peak positions. Using these ...

I'm working with the system of differential equations: $$\begin{align*} \left\{ \begin{array} { l l } { (u')^2 + (v')^2 = 1 } \\ {u'v'' - u''v' = -v' + u' } \end{array} \right. \end{align*}$$ Where $...

I don't know how to subtract off background data Data0 from my data sets collected in Datagen. ...

I have a function of 3 arguments mu[kx_, ky_, lambda_] := -(kx^2 + ky^2) - (kx^2*(kx^2 + 5*ky^2)*lambda)/(kx^2 + ky^2)^4 I want to plot ...

I have solved the following system non-linear: ...

I need to integrate a function in a 4D region (x1,y1,x2,y2), which explodes whenever x1=x2&&y1=y2. The code is as following: ...

I have a txt file like this: A B C 400 2 3 2 1 8 Now I would like to import the txt file and write it all on one line instead of in columns, so like that: <...

As in the title, I'd like to display image using DensityPlot representing distance to a given curve, e.g., $y=x^2$. I find it difficult to derive distance ...

ListPlot[list, Joined -> True, PlotRange -> Full] I would like a simple method to get the positions within the list where the values deviate a lot from ...

I have a text file data that I imported and I want to fit it with a given equation. I tried to fit but it did not work and gives Here is my code: ...

I've opened a question here, which was answered. The code works totally fine for a small set of data. However, for a large set and over many iterations, it will take a long time (in order of 24 hours)....

I have a boundary-value problem, that is defined over two adjacent regions with an interface in the middle, that contains an eigenvalue $\lambda$. The boundary conditions and the equations are ...

This quest is motivated by this. If I wish to visualize 3 Graphics3D objects, I can do this: ...

I try to wrap my head around machine precision calculations in Mathematica (11.2, Linux). I do not understand the following behavior: ...

Plot[1.88 (a^(1/3)) , {a,-0.56,0.56}] I unable to plot the expression in x axes and variable in y axes

I have 2 xls files of data. 1 for input and 1 for output for neural net. They are of the form {{1,2,3,4,5,6,7},{7,2,3,8,5,9},....} I can get the files into Mathematica, but unable to get it to train. ...

I want solve a System with n equation of Motion in first order. In this equation of motion are creation and annihilation operators of Dirac-fermions. I cannot figure out how to describe the creation ...

I have an image and I would like to retrieve all color values of pixels which are located along stribes: So what I do, is the following: I import the image from the web I get the image dimensions (w,...

We are planning to analyze geometry of artery branch pattern. We convert the binarized image into graph object using MorphologicalGraph[]. To avoid the complexity ...

Writing: Normal@ParametricPlot[{x, x^2 t}, {x, 0, 2}, {t, 0, 1}] /. p : {__Polygon} :> Graphics`PolygonUtils`PolygonCombine[p] I get: but if I write: ...

Is it possible to solve $\qquad Uxx + Uyy=0$ and $\qquad U[0, y]=0, U[1,y]=0,U[x,0]=0,U[x<0.3,1]=10,U[x>0.7,1]=10$ and Neumann condition in (0.3, 0.7)?

I'm trying to plot a family of functions differing only by a constant $c$. The function is: $2x^2-5x+c$. In order to plot them I'm using the following code: ...

Here's some code that will produce a cube: ...

Unable to set Range for 3dprint as part of full 3D parametricPlot3DRange. RevolutionPlot3D[{50 + 25*Cos[u], 25*Sin[u]}, {u, 0, Pi}, PlotStyle -> Thickness[3], PlotRange ->{ {0, 80} {-80, 80}...

I have a problem with obtaining the domain of resulting Interpolating Function in my calculations. I want to solve the following differential equation ...

I have data set in a form ROG1.dat, ROG2.dat,...,ROG100.dat, I want to import all of them in Mathematica, Can you tell me how? Best

I have the source file file = "test.txt" with these values: ...

I am working with AceGen and I try to define my own materiał and in this material I have a parameter K which is calculated at every incement. My problem is that ...

Spelunking the Export function, I stumbled upon the following definition: ...

I am trying to plot an equation using contour plot with x-axis in logarithmic scale. ...

I'm trying to do something that should be fairly straightforward: having a vertical y-axis label. My problem is, it creates a ridiculously large space between the label and the axis (exactly what I'm ...

Upon constructing the following graph, I expected the node labels to appear as per what is provided. The letter case of Node E is not in CAPS as shown below. Please correct me if I misunderstood ...

Here is a segmented volume with 96 different features. I wish to visualize each feature with a distinct color. I followed this documentation and used Blend to ...

Suppose I have the following list: ...

Writing: plot = ParametricPlot[{x, Min[1, 2] t}, {x, 0, 2}, {t, 0, 1}, PlotRange -> {{0, 2}, {-1, 2}}] I get: but if I write: ...

I have some code I've been using to generate some random geometric graphs as fast as possible. The boundary conditions on the rectangular domain I am using sometimes interferes with a clean ...

The help file for format/Table says very clearly "By default, Export delimits text fields containing the field separator with double-quote characters." A simple ...

I would like to know is there is a way to do this: ...

I want to analytical Solve or numerical solve by Mathematica a biharmonic equation with homogeneous boundary conditions homogeneous? I considered its solution using Fourier analysis, which is not ...

I am plotting Abs[R] on y-axis vs k on x-axis with the following code ...

I have a Mathematica file in my google drive. There is no option to open the Mathematica file directly, without downloading it. Is it possible to directly open the file from google drive?

This is a followup to this question of mine. How do I generate a random point on the most external surface of this complex geometry? ...

There are two examples of what I am talking about in this equation: $$\displaystyle \left.\mathrm{d}\Phi\left(v\right)\right|_{p}\equiv\left.v^{\mu}\frac{\partial\Phi^{\lambda}}{\partial x^{\mu}}\frac{...

Given: ...

My problem stems from trying to integrate fsbb which will be shown later. Here's how fsbb is defined. I first have a 3x3 ...

I'd like to construct a function, that changes its own input. The code ...

Here's a simple function g defined for the natural numbers 1 through 10: Table[g[i] = i^2, {i, 1, 10}] I now want to find the ...

I have to work with different Financial Futures Index in Mathematica using the function "InteractiveTradingChart". But, I can't able to find a complete list of all the available Financial Futures ...

I am numerically solving a large set of coupled ODEs. The tutorial here: http://reference.wolfram.com/language/tutorial/NDSolveIntroductoryTutorial.html ...is ...

I would to work with real time interactive trading chart, for example: which is the daily chart of Dow Jones Inustrial Index But, the problem is that Mathematica "InteractiveTradingChart" function ...