# All Questions

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1answer
90 views

### solve the iterative integral equatio

The following code is incorrect, please specify my mistakes ...
2answers
16 views

### How best to join tables, which have different lengths on the same column values which exist in both tables?

I think my problem is pretty simple, and in SQL this would be trivial. I have two tables ...
2answers
72 views

### To plot branch cut of logarithm

I like to see the branch cut of the function: $$1 - z \ln[(1+z)/z].$$ If I plot it in the complex plane: ...
0answers
24 views

### Why does Mathematica not evaluate this? Need help with symbolic integration

So I have f[x_] := g[x]/g'[x] FullSimplify[Integrate[f[x], x]] and I'm trying to get F(x) in terms of g(x) but it gives the random expression below as output ...
2answers
76 views

### Show two plots together: a two dimensional curve tangent to the maxima of a three dimensional plot

I have a list containing 3 columns and 6552 rows which can be found here. The plot of data is shown below: We have a cross cut ...
1answer
53 views

0answers
11 views

### How can one remove the prefix /home/pi from Mathematica links to the web (e.g. documentation) on fresh raspberry pi 4 installation

With a fresh installation of Mathematica on a new raspberry pi 4, I find that the links to help and documentation and the Wolfram site are all erroneously prefaced by "/home/pi" which causes an error ...
1answer
77 views

### Greek letters don't depending of the font

For some reason mathematica (11.0.1 Windows 10 64-bit) does no use greek letter font from the selected font by FontFamily -> "AnyFont" When I check the ...
1answer
91 views

### Create a Miura origami pattern?

I want to solve the below code to create an origami pattern ...
1answer
25 views

### ListDensityPlot and interpolation order

I am working on a project that takes arrays of data and visualizes them using ListDensityPlot. I noticed, when I imported an array from a CSV file, the last column ...
0answers
9 views

### How to realise the backflow from one volume to the upper volume by modelica language?

It is a simple idea that I Want to solve the same equations in a finite volume when the variable x of next volume is computed smaller than 0. Because the characteristic of the modelica language, it is ...
2answers
306 views

3answers
559 views

### Is it safe to Unprotect everything? What are the implications?

What is the reason for built-in symbols to be Protected? What happens if I Unprotect built-ins and add my own ...
2answers
298 views

### Solve an equation with specific domain?

How can I write a code in Mathematica to solve an equation with variable in specific domains? For instance, I want to write a code for ...
2answers
35 views

### Generating random variates inside summation

I'd like to generate a table of sums which each a non-correlated, normally distributed random variate inside. Here is the sample code: ...
0answers
19 views

### Canonical URL's for deployed notebooks changed?

I'm using the function below to update my notebooks in the cloud. Traditionally it deployed to the following location: https://www.wolframcloud.com/obj/yaroslavvb/whitening/curvature-unit-tests.nb I ...
1answer
150 views

### What is the best way to use errors in mathematica M12?

Since ErrorListPlot has been superseded by new functionality in ListPlot for Mathematica 12.0, what is the best way to handle ...
5answers
362 views

### Polar contour plot in Mathematica?

I am following a text on fluid mechanics with MAPLE examples. I want to do the following ContourPlot in Mathematica in Polar coordinates:  (r^2-\frac{a^3}{r}) \...
1answer
73 views

### Matching spectral data to known spectral lines

Preamble: I designed some code to help me take spectral images from a spectrometer and convert pixel number into wavelength. It does reasonably well at matching a calibration spectrum of a neon lamp ...
1answer
46 views

### Strange Startup Error Messages

Seemingly out of nowhere when I open Mathematica a messages window pops up with these two warnings. This issue starting occurring after no changes where made. ...
1answer
30 views

### remove one of the column in the output of Solve command

I would like to remove one variable in the output of the "Solve" command without changing the rest. For instance, in the following code ...
1answer
102 views

### Plotting rescaled time series and temporal data

I am trying to use ListLinePlot to plot three "Components" of my TemporalData in Mathematica. The three components differ widely in the range of the data. So, I want to Rescale each component and plot....
0answers
27 views

### Problems with the parametric Recurrence Table

I am trying to construct a minimization program where I have to minimize a function with respect to a matrix. This matrix enters into the optimization program in a convoluted manner together with data....
0answers
31 views

### NestList with LibraryFunction

For some reason using Nestlist with LibraryFunction can lead to kernel crash. It looks like something non-numerical is passed to LibraryFunction. There is no problem if the argument is checked, but my ...
0answers
28 views

### Using input in notebook TOC to Open at page 50 of a notebook

Already I have made a Table of Contents (TOC) notebook. In it are buttons which when pressed load very long notebooks, like say notebook ZZZ, which contains research notes. TOC works great. ...
1answer
44 views

### Solve integral equation by iteration

For[{n = 1, y[x_] = 1}, n < 4, n++, y[n][x_] = 1 + Integrate[y[n - 1][t]^2 + t^2, {t, 0, x}]; Print[{n, y[n][t]}]] here how can I get table of values ...
4answers
387 views

### How to obtain a subset (of a 2-d set of points with random coordinates) having monotonically increasing ordinates

If I start with a 2-d set of points: ...

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