All Questions

I have a list of x and y coordinates and values corresponding to it. (Note: I don't have a function). ...

This is using V12 on windows. I solved this PDE by hand and wanted to ask Mathematica to verify my solution. But Mathematica solution does not look like mine. And when I tried to verify Mathematica ...

I have some problems with this answer geodesics' on torus. I mean the first variant of answer. I'm trying to enter the points u1, u2, v1, v2, but the solution does not output anything, only the ...

I have two matrices with different dimensions I want to join them together in one matrix. for example, I have two lists of diseases associated with their symptoms in both matrix, what I want is to ...

I can not perform calculations with ThermodynamicData. Is there an error in my code?. I have MMA 12.0 Windows 10 ver.1809. ...

picked up Mathematica (transitioning from Python) a couple of days ago so forgive me for the newbie question. I'm trying to create a function which takes in a list of numbers and returns a list of the ...

Please, how to evaluate dh(g(x))/dg(f(x)) by the following definitions: ...

I have compiled data about the evolution of a function with time and the data looks something like this. I wanted to plot this data in the form of a density histogram such that every row represents ...

Needed to draw a salesman territory map, multicolor like a schoolhouse USA states map, with the Postal Abbreviation location at the state capital. Wished to do it with GeoGraphics and curated ...

When I write a manuscript which has two columns, usually it's hard for me to fit a big expression into one line. I usually simplify the expression further by manually finding some common terms (...

Please I do not understand why Mathematica 11.2 version evaluates numerically the value below Exp[-800]//N (* 3.667874584178*10^-348 *) while 11.3 and 12 ...

I'm experimenting with FFT simulations. I'm generating transient data at the some sampling rate, down-sampling this (mimicking a device's behavior) to 2048 points. Then take the FFT using ...

Is it possible to utilize Mathematica's CreateDocument within a function, so that a notebook pops up in the front end? For example, creating a function like: ...

I have been trying to solve a nonlinear eigenvalue problem (in the form of an integro-differential equation for $u(x)$ on $x\in[-L,L]$) in MMA, $$uu^\prime+u^{\prime\prime}+u^{\prime\prime\prime\...

Is it possible to define different Edgeform's in a in a BarChart with ...

I want to autofill the elements of a matrix (or list) by m11, m12, etc. I am able to autofill using ...

I have have code to the parametric plot of an ellipsoid: ...

Hitting the Shift + Enter combination is not working for me in Wolfram Mathematica. It just moves the cursor down, it doesn't produce any output: no computation or plot or anything visible. What ...

Let us define a set $\mathcal{S}=\{1,2, 3,\cdots,67\}$. I have a list of 132 subsets. I want to obtain 16(or 17) mutually exclusive subsets such that union of such 16(or 17) is equal to $\mathcal{S}$...

Hope you're having a great day! I made another post in regard of how to insert an image onto a face of a Polyhedron. I hope you could help me on this one too! I want to change the length of the ...

A list of 132 subgraphs (each with 4 nodes) is also available. A given node is available in multiple subgraphs. How can I find 17 subgraphs that are mutually exclusive (i.e., one node can be present ...

I think I have now managed to save the Ricci.m file, and also load the package on Mathematica. the instruction manual for the Ricci package is given here. When I enter Ricci.m, I get the following ...

I'm new here, so I hope you're having a good day! I want to represent a Polyhedron with every face filled with my own Image of choice. Still, don't know how to do ...

We have a neural network that returns a vector $v$ with length $n$. However, these results $v_i$ must be normalized to unity so that their sum $\sum_{i=1} ^{n} v_i=1$. It must be done inside the ...

I have at a hand a set of linear equations of the form M*x=y (matrix form) M_ij * x_j = y_i where i = 1,...,N (in components) where M is symmetric, and all its elements are positive. Further, ...

Two simple kinds of simulating the one-sided exact Fisher-test of obtaining at least 86 successes in 129 draws in a population of size 299 containing 167 successes 1st Version is rather slow and ...

I'm interested to implement a custom input style which would appear (mostly?) like a normal "Input" Cell, but which would ...

I need to import .ibw (Igor files.) into Mathematica. For this I used 1) to go in R via Rlink (OS windows), 2) to load the package IgorR 3) to install it and then to use it. Here is a script which ...

I am trying to implement a function that takes a Graphics instruction as its argument and then duplicated it in a new InputCell. ...

I am not getting a plot from the following code. Please tell me how to fix it. ...

I have a code which goes like this: First one ...

I have this problem. I want to show the unassessed form of the equations that I enter in the graph, however, every equation that I introduce results in the substitution of the known values within the ...

I have experimental data which looks something like this I first want to remove the outlier points which are at quite high value such as around x= -10,000 etc, how to automatically trim these points....

How should I specify a discrete range for a parameter as one of the conditions in FindInstance? MemberQ/Element functions don't seem to work. For example, ...

After solving an equation I came up with a complicated expression, is it possible to only keep some specific terms of an expression ? As an example, if the expression is: How can I keep only those ...

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DSolve is not returning anything other than the original expression on ...

I want to use the network analysis software Gephi However I am having an issue with importing a CSV file from GQIS 3.6.2. It is saying that I am missing 'source' and 'target' and the node ids. I ...

I have a set of equations involving two anti periodic functions $f(t+T)=-f(t)$ and $g(t+T)=-g(t)$ \begin{cases} f(t)&=J^2g(t)^3 \\ \mathcal{F}[g](\omega_n)&=\frac{1}{-i\omega_n-\mathcal{F}[...

I am currently starting to develop a Web API for our schools mathematics placement examination for new students. We have the questions and we have what potential scores will mean for us. After ...

Short version of question: Suppose I have an expression: expression = a+3b; When I divide by 2, I get: expression/2 It is ...

I am very beginner to Mathematica and also a new user on Stack Exchange. I just need to find solution to the equations. I found an example similar to my problem on the internet. When I put following ...

In my calculations, I found this equation: ...

When creating a docked cell, the toolbar stays forever visible and somewhat "eats up" space. Since I do not use the different buttons all the time, is there a way to make the toolbar expand/collapse?

I cannot get the graph of the system of differential equations below, can you help please?? ...

I was trying to use DynamicModule to create a Input cell that contains a variable assignment, where the variable name is given ...

I'm trying to export a gif from a list of images The AnimationRepetitions command works, but the AnimationDirection does not. It just goes one way. Is there a way to loop back and forth? Here's some ...

I am trying to improve my NetChain to better predict physical data from the industrial standard for water/steam published by the IAPWS. Basically, this industrial ...

I'm trying to solve a differential equation on Mathematica. I entered the following line of code DSolve[y'[x] == x, y[x], x] However, I'm getting the following ...

I have an adjacency matrix given by am. I want to generate all possible subgraphs with 6 nodes. Here is the code I am using to generate them. But, I am getting some error: ...