# All Questions

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### Integration NSolve problems

I have some problems in solving this equation numerically in mathematica. Mathematica give me the error message "NSolve::nsmet: This system cannot be solved with the methods available to NSolve&...
18 views

### Assessing conditions on list of solutions

I have a list of solutions from Solve[] in the form ...
16 views

### price search and compare from appointed websitee

Is it possible to search and compare for the price of a certain product e.g "Dầu thực vật Tường An" in different appointed websites, e.g. https://www.sendo.vn, https://www.lazada.vn, https:/...
28 views

### How Color the PathGraph Showing Multiple Shortest Paths on the US Counties Map

Below is code for mapping the connectivity of US counties. It comes from the Mathematica reference on "Connectivity of US Counties". I've highlighted 3 shortest paths shown in red. However, ...
22 views

### how we can devide a N-dimensional space? [closed]

I am new with Geometrie and mathematic problems so maybe I said some wrong things. I have an N-dimensional space where there are a set of points (2^N points) where each point has a coordinate like ...
40 views

### Trying to find a value for a Taylor series that matches the plot of the function

The function is g[x_] := (1/Sqrt[2*Pi])*E^((-x^2)/2) and I'm trying to find an $n$ for Series[g[x], {x, 0, n}], n], that matches ...
31 views

### MorphologicalEulerNumber misbehaving in 3D?

Context I would like to compute the MorphologicalEulerNumber of 3D GaussianRandomField as a function of height above a given threshold. Attempt I proceed as follows:...
52 views

### How to draw a barchart with a vertical line

The following code works just fine with a few caveats. ...
26 views

### Converting JSON to CSV but the formatting is not correct

I have a folder of about a million JSON files and I wrote this to convert them quickly to CSV, but the formatting is not correct for the software I'm feeding them into. Here's the code I'm using: <...
40 views

### Analyzing anomalies of Bluetooth audio generation with Mathematica

I' m working on an audio generator for physics lab, using an Android device and Bluetooth . However, the response of the Bluetooth speaker is wrong. When programmed to deliver, say 3150 Hz, it may ...
44 views

### How to Import multiple sheets (aka tabs) from Google Sheets?

One can Import multiple sheets from an Excel file, say sheet "n" with Import["file.xls"][[n]], but how to do ...
44 views

### How to find the eigenvalues of a matrix [closed]

I'm new to mathematica so don't have alot of experience with it. I'm currently trying to make code to find the eigenvalues of this matrix but keep getting an incorrect answer - could someone let me ...
60 views

### How to add labels in the upper-right-hand of the plot? [closed]

I have the following plot: ...
72 views

### How to solve this infinite family of equations?

Is there any way to do a problem like this with MMa? I have an infinte set of coupled equations. j is a real integer index where $-\infty<j<\infty$. {a,b,c,d,f} are variables, and K's are ...
30 views

### Filter in data-set from .txt file not obeying a set of rules

Well, my question is the following: I have a .txt file that consists of the following data (this file is much larger than presented here): ...
41 views

### Limit for some the variable in Mathematica

I have this limit but Mathematica can't solve it??!! ...
41 views

### Mathematica package for computing Macdonald polynomials

I want to implement computation of Macdonald polynomials in mathematica. A similar question was raised in another question 5 years ago (Macdonald-Koornwinder polynomials?), but received no clear ...
51 views

### Does Mathematica assume real variables in this case?

When we have a function like $f(x) = x^2-1$ and we expand it in a power series about some $x = x_0$, does Mathematica automatically assume that $x$ is real valued?
42 views

### How to use AppendTo in do loop?

list = {1, E, (3/2)*E^2 + (3/8), (5/2) E^3 + (25/8)}; AppendTo[list, 2*E*list[[{x - 1}]] + (2*x - 3) (2*x - 4) (2*x - 5) (1/4)*list[[{x - 2}]]] Let x from 5 to 10, ...
23 views

### S-Stress for Multidimensional Scaling in Mathematica 12

Mathematica 12 is now supporting MDS. DimensionReduce[{{1, 2, 3}, {2, 3, 5}, {3, 5, 8}, {4, 5, 8.5}}, Method ->"MultidimensionalScaling"] The process is straight forward, but there is no ...
42 views

### Is SetDelayed creating Functions?

I was trying to create a named function using a short syntax (I mean avoid writing Function[]). I thought SetDelayed was the short for Function[], but then I had some issues and realized that maybe #x ...
47 views

### Why does drawing a plot with function not work? [closed]

Can anybody tell me what I did wrong that I don't get a function in my plot? It's empty, there is no line. f[x_] := Cos (x)/(2 - x^2) Plot[f[x], {x, 0, 2}]
88 views

### Solving a differential equation where all functions are unknowns

I'm trying to solve DSolve[f[x]*(x^2*g''[x] - 2*g[x] + 2) + x*(x*g'[x] - 2*g[x])*f'[x] == 0, g[x], x] for $g(x)$, however Mathematica cannot find a solution. ...