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Creating table of 2 different variable and exporting them to single excel file

I want to put the results in a table for X and Rn.they are 2 different variables which don't depend on each other and plot them with X on x axis and Rn on y axis or export both of them in a single ...
Ibrahim's user avatar
  • 37
9 votes
4 answers
454 views

DSolve returning "Indeterminate"

Bug introduced in 13.0 or earlier. Fixed in 13.1 I am trying to solve the following differential equation with Mathematica: $$ z\,(1-z)\,\psi''(z)-2 z\,\psi'(z)-\frac{3}{4}\frac{\psi(z)}{z+a^2(1+z)}=0\...
user12588's user avatar
  • 585
1 vote
1 answer
82 views

How to draw a curve like the picture below?

I am quite new to Mathematica. I would like to draw a figure like the one shown. Can anyone help me regarding this? Thanks in advance.
Priyam's user avatar
  • 11
9 votes
2 answers
414 views

Why AppendTo is much faster than Table for tracking object movement

I need to track some objects, the simplified version something like this ...
matrix42's user avatar
  • 6,996
2 votes
0 answers
49 views

Stylesheet Directives for DisplayFormular overwritten?

I'm trying to change the font of DisplayFormula, DisplayFormulaNumbered and InlineFormula in my stylesheet. So in the options inspector of the stylesheet under ...
kienappel's user avatar
  • 421
0 votes
0 answers
64 views

Why RegionPlot does not work in this example?

I have some trouble understanding the RegionPlot command. I have defined the following input ...
LionCereals's user avatar
1 vote
3 answers
190 views

How to return unevaluated variable?

I'm not sure if this problem has been asked before as I don't know the keyword to search for it. I have a function where return result contains variable b (just ...
hana's user avatar
  • 2,388
1 vote
1 answer
285 views

Dollars with Superscript Cents in text

I would like to show the cents of the dollar amount as superscripts inside text. I can define a function for making the cents into a superscript, but when I add the result in text, the text gets ...
Nicholas G's user avatar
  • 1,971
10 votes
1 answer
661 views

How to use Python functions in Mathematica functions in Python notebooks?

I want to plot things with Mathematica, inside an ipynb Python notebook. I can easily plot functions that are expressed in the Wolfram Language, e.g. with ...
JEM_Mosig's user avatar
  • 3,003
2 votes
4 answers
272 views

what's the Mathematica command for a recursive formula?

I want to know the Mathematica command for $$f(a)=\sum_{n=0}^{a-1} \frac{f(n)}{n!}, \quad f(0)=1$$ How to write $f(0)=1$ together with the summation? I used: ...
Ali Shadhar's user avatar
0 votes
1 answer
43 views

How to calculate cumulative density from a dynamical output?

I am running a simulation. I want to calculate the cumulate density of each species "C" and "R" from 0 to 100 [I just need the final number, not a graph]. Here is a sample equation ...
grading's user avatar
  • 261
2 votes
1 answer
373 views

Is there some shortcuts to delete a cell?

Just like deleting a line with ctrl+d or something else in normal coding, is there some shortcut to delete a whole cell?
narip's user avatar
  • 381
0 votes
1 answer
68 views

How to output data according to specific requirements and improve the calculation accuracy of NDsolveValue

How to output data after solving an equation? That is, the output x, and the y value corresponding to x. ...
gufe's user avatar
  • 65
8 votes
5 answers
493 views

How can I change the expression x1 to x[1] in a simple way?

I have one expression, exp0=x1+x9/8+ x4 x5 I want to get exp1=x[1]+x[9]/8+x[4] x[5] Is there a very simple way to do that?
Orders's user avatar
  • 1,247
3 votes
2 answers
192 views

How does NumberQ work [closed]

I want Log[2 x / Pi] to be expressed as Log[2/Pi] + Log[x] so I make this replacement ...
Patchouli Nine's user avatar
2 votes
1 answer
73 views

PercentForm in SetterBar Labels

I want to have the numbers that a SetterBar displays for the user to select to appear as percentages. For example, the following code should have percentages not ...
Nicholas G's user avatar
  • 1,971
4 votes
1 answer
55 views

Convert Company Entity to Finance Entity

Is there an easy/straightforward way to get the corresponding Finance entity given a Company entity if it’s available? I have a hack-y fix just y taking the “Name” property for the Company and ...
Denis O'Riordan's user avatar
0 votes
2 answers
154 views

How to generate random dots with given distances?

I am interested in the following problem, and am curious if Mathematica could be used to solve it. I start with a radius function $\rho:D\to \mathbf{R}_{\ge 0}$ on a region $D\subseteq \mathbf{R}^n$. ...
Pulcinella's user avatar
0 votes
0 answers
97 views

While loop to solve a diffusion problem

Crossposted at Wolfram Community: https://community.wolfram.com/groups/-/m/t/2506329 I am trying to use a While loop to solve for a diffusion problem using the power iteration method. The code is ...
joe a's user avatar
  • 1
0 votes
0 answers
96 views

How to access the data object returned from a Wolfram query?

I want to access information regarding the population of the world, over the last 10,000 years, and then visualize it with some annotations. In particular case, I want to: grab world population data ...
algal's user avatar
  • 113
0 votes
1 answer
41 views

Exclude blank values from dataset (GeoPosition)

Any idea how to filter this dataset to exclude blank values in FlightPath?
Steven Buehler's user avatar
1 vote
1 answer
458 views

How to fit a specific range of data?

Let me explain my question by a toy example: Suppose I have a simple Gaussian function as follows: test[x_] = 4*Exp[-(x)^2]; If I its data to a new Gaussian ...
Wisdom's user avatar
  • 1,258
6 votes
1 answer
416 views

Is K is a function? [duplicate]

Some of the capitalized single letters are functions. Starting a fresh kernel and typing in the 24 capital letters, the following letters turn black since they are special functions, ...
Kai's user avatar
  • 2,099
1 vote
1 answer
95 views

Solve and Plot an example with boundary condition

I have this piece of code to plot this solution, but I guess it should be numerical or parametric way!!! ...
Armin Sharafi's user avatar
1 vote
0 answers
39 views

Or in Refine fails?

I think this should be True: ...
Pierre ALBARÈDE's user avatar
0 votes
1 answer
207 views

Solving a PDE gives stiffness error

I'm solving a PDE with ...
Roberto_1986's user avatar
9 votes
2 answers
237 views

How to do boolean operations between a large amount of regions

I want to do boolean operations between a large amount of regions. For convenience, I consider a simplified problem. The problem is as follows, digging out a large number of small hemispheres on the ...
hadesth's user avatar
  • 275
4 votes
4 answers
987 views

Find fit function

I want to find a fit function for the following data. Can someone suggest the best-fit function for the following data? The upper part of the data set is difficult. ...
SciJewel's user avatar
  • 379
1 vote
1 answer
124 views

How to run multiple random process and plot its average for a non-autonomous logistic model?

This problem is a continuation of the discussion from here, with random impulse function as discussed in here to formed the following: ...
nightcape's user avatar
  • 173
1 vote
1 answer
522 views

DifferentialRoot with no explicit branch cuts

I have a partial differential equation to solve. However, Mathematica shows solution that is not exactly the way I want. ...
Shamina's user avatar
  • 633
11 votes
8 answers
590 views

How do I flatten a matrix of lists while maintaining the structure of the list?

I have a 2x2 matrix of lists. For example, the matrix I am working with looks like matrix = {{{a,b,c}, {e,f,g}}, {{h,i,j}, {k,l,m}}} I want to define a function ...
Bharath Radhakrishnan's user avatar
0 votes
1 answer
102 views

Line Legend with dashes and thickness not working

I am trying to create a line legend with specific dashing and thickness. Here is the code. ...
grading's user avatar
  • 261
1 vote
1 answer
73 views

Color each curve with its proability to appear

I have a function f(x) which is dependent on a random parameter a. I can define a matrix Y containing {x,f(x),P}, where P is the probability that the curve appears. I would like to plot these curves ...
Jocelyn Minini's user avatar
0 votes
0 answers
63 views

Fitting data with weights in a Log-Log scale

I need help. I have the following dataset: ...
Luigi Mancini's user avatar
2 votes
1 answer
69 views

Choosing numbers whose divisors can be partitioned into subsets having the equal sum

How can we find the list of natural numbers between 100 to 10000, whose positive divisors can be partitioned into three subsets such that sum of all the elements in three subsets will be equal?
Anirban Roy's user avatar
1 vote
1 answer
76 views

Simple algebra question

Am I missing something here? This does not resolve to True. Clear[x,y] $Assumptions={x>0,y>0} FullSimplify[(Sqrt[x] + Sqrt[y]) == Sqrt[x + y + 2 Sqrt[x y]]] ...
Paul R.'s user avatar
  • 877
0 votes
1 answer
122 views

Defining a general function f with slot-holder arguments #1, #2

I am trying to get a general function $f$ accept slot-holder arguments #1, #2, where the actual arguments are lists {a1, a2,...} and {b1, b2,....}. I thought that this would involve some combination ...
user195583's user avatar
2 votes
1 answer
46 views

How can I prevent my self-introduced integral sign being multiplied into the numerator of the integrand when converting the expression into TeXForm?

Recently I have been doing a lot of double and triple integrals. To my disappointment, MMA does not have built-in integral signs for those advanced or special integrals. Fortunately, I have found out ...
AlbertLew's user avatar
  • 473
0 votes
1 answer
72 views

NCAlgebra - Factoring common commutative coefficients

This is a rather simple question that I cannot quite figure out how to do. Basically, I have the result of some matrix multiplication in which my resultant matrix has a mixture of commutative and non-...
D. Brown's user avatar
  • 304
8 votes
4 answers
363 views

Finding the roots of Abs[Hypergeometric1F1[1/4 (3 - (2 x)/I), 1.5, I]]=0

I want to solve for the first 100 or more zeros of Abs[Hypergeometric1F1[1/4 (3 - (2 x)/I), 1.5, I]]=0; The following code is my simple attempt: ...
Vancheers's user avatar
  • 736
4 votes
3 answers
191 views

How to remove part of the solution in ContourPlot

I am interested in plotting solutions to the equation $\lambda^2\sin^2(\alpha)-\sin^2(\lambda\alpha)=0$ with $\lambda>0$ and $0\le\alpha\le2\pi$. However, I am not interested in the trivial ...
user avatar
5 votes
1 answer
65 views

Picking integer compositions with certain descent patterns

I am trying to find a nice way to pick out all the integer compositions (ordered partitions) of an integer $n$ that satisfy a given pattern of descents between some adjacent elements. Writing a ...
Brian Hopkins's user avatar
7 votes
1 answer
220 views

Solve 1d fractional equation with Mathematica

How can we use Mathematica to solve the following fractional elliptic problem? $$a(-\Delta)^su + bu= f(x) \text{ in } (0,1),\\ u = c \text{ in } \mathbb{R} \setminus (0,1), $$ for $a,b,c\ge0$ and a ...
Riku's user avatar
  • 349
2 votes
1 answer
91 views

Adding A line in a graph

I have this question about how to add a line in a ListPlot[] graph. I am trying to add a y=4 I have written the following: ...
diegor's user avatar
  • 93
2 votes
0 answers
70 views

Automating notebook evaluation

I have several notebooks that cover various facets of our firm. Each notebook queries a database, generates graphs, and uses Export[] to produce individual graphs (...
Steven Black's user avatar
4 votes
2 answers
198 views

Error animating a 3d parametric plot of a sum

I am trying to animate a sum together with a circle (specifically the vector field $(r \sin \theta , r \cos \theta, u(r,t))$ using Animate and ...
user avatar
1 vote
0 answers
21 views

How to create a form that takes user input (e.g., gmail address) and displays a dataset of that user data from Databin

I am trying to deploy a form where a user can enter their information such as their ID or any identifier only pertaining to them and then view the corresponding contents formatted as a dataset. A ...
John's user avatar
  • 11
2 votes
1 answer
70 views

creating pairs of a {2,80} dimesion

Suppose that: ...
fernando1's user avatar
8 votes
1 answer
174 views

What is a numeric value of PlotStyle?

In the documentation of Plot, under Options / PlotTheme, there is this example: ...
GregH's user avatar
  • 1,909
-1 votes
1 answer
97 views

FunctionContinuous produces False for a continuous integral [closed]

In V 13 on Windows 10 the command (I blow on cold water with GenerateConditions -> True) ...
user64494's user avatar
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