Questions tagged [mathematica-online]
For questions specific to the Wolfram product Mathematica Online.
139
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2
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4
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348
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Horizontal version of Print[]
With the following code I produce the binary digits of n=13:
n=13;
Q = Quotient[n, 2];
While[Q != 0, Print[Mod[n, 2]]; Q = Quotient[n, 2]; n = Q]
The problem is ...
- 153
2
votes
2
answers
458
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Mathematica and WolframAlpha gives wrong result about DiracDelta function
Wolfram alpha says the integral does not converge and also Mathematica didn't give answer to the integral:
$$\int_0^t\delta(z)\delta(t-z)dz$$
which should gives the result of $\delta(t)$ as you will ...
- 179
0
votes
0
answers
29
views
I am having problem with initialization of parallelization in Mathematica
I have been using parallel computing in Mathematica for a couple of months. Today suddenly, parallel kernels are not starting. Can anyone tell me what can be the potential reason?
...
2
votes
1
answer
81
views
how to solve problem involving a condition?
I am new to mathematica, therefore this might be a pretty simple question,
My problem is for example: Compute the eigenvalue for matrix A= {{1,c},{1/c,1}}, c>0.
when the matrix becomes more ...
- 23
-2
votes
1
answer
107
views
How to find an approximate equation from a given equation using Mathematica? [closed]
I am interested in finding an approximate equation based on a given equation using Mathematica. Specifically, I am working with the quantum illumination transmitter's quantum Chernoff bound (...
- 17
-2
votes
1
answer
84
views
List of Integers [closed]
Evan writes down a list of 15 integers, each of which is either 0 or 1. He does this in such a way that there are never three consecutive integers in the list that have the same value. How many ways ...
- 1
2
votes
1
answer
78
views
Nintegrate and Integrate don't give same results
I am trying to compute an integral of the form
$\int_{\frac{1}{10000}}^{\frac{1}{1000}}g(x)x e^{3ix}$
in Mathematica both numerically and analytically. $g(x)$ is equal to
...
- 99
1
vote
1
answer
81
views
Question about numerical integration of a double integral
I am trying to numerically integrate the following double integral in Mathematica for different values of t.
...
- 99
-1
votes
1
answer
73
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Triangle with three corners, find area f(a) and when function has its min-value
This is my code:
...
- 1
1
vote
0
answers
42
views
Problem of " The kernel is not responsing to dynamic evaluation "
I am having this error again and again while using parallel computation. The code is fine because
it runs when I am not using parallel computation. But as it takes a lot of time to run ( around 3 - 4 ...
0
votes
0
answers
25
views
I am having problem in paralleltable and parallel sum ( Parallel computation in Mathematica)
You will receive the code here
I want to do parallel computation here because I have planning to go further level and it will take a much longer time. I could not understand what this error means and ...
0
votes
0
answers
31
views
Question about the behavior of a data point as a function of time
I have a set of data points. The first coordinate is time and the second coordinate is energy. I am trying to figure out how the energy is decaying over time. Particularly, I have to find if it is ...
- 99
0
votes
1
answer
39
views
How to export file in For loop? [closed]
I am using the following code to export a file with three columns. I am using the Export file command like this but not getting the output. Can someone please help with this?
...
- 197
1
vote
1
answer
74
views
A 3-dimensional principal value integral [closed]
I am trying to find a principal value integral of the following form in Mathematica. $f(z)$ is a smooth function. The problem is that Mathematica is very slow in this computation.
$\int_1^2 dx\int_1^3 ...
- 99
2
votes
1
answer
88
views
Limit of Taylor coefficients
I want to calculate the following limit:
b[n_] := (D[1/(1 - t), {t, n}] /. {t -> 0})/Factorial[n]
Limit[b[n], n -> ∞]
(* Indeterminate *)
where ...
- 23
0
votes
0
answers
64
views
How can I upload a package which is saved locally as a ZIP file to Mathemtica Cloud and Load the package?
I am using the online Mathematica Cloud. I have one complete package(in this case, a group theory-related mathematics package), which is saved locally as a ZIPed folder. The ZIPed folder contains ...
- 1
4
votes
3
answers
575
views
Mathematica not solving this integral
I am trying to solve for
But it is returning the same. I need this to complete my research.
Please help.
The expression used by me in mathematica is:
...
0
votes
0
answers
62
views
Some typical symbolic mathematica code in python with the help of Wolfram Client Library for Python
I have downloaded wolfram library in my vs code and ran few common seeing Wolfram Client Library for Python
e.g:
...
- 101
2
votes
1
answer
73
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Solving equation using mathematica
How I can solve the equation :
$$R -\tan^{-1}[(m1/m3)*(k3/k1)] - \tan^{-1}[(m1/m2)*(k2/k1)]=0$$
I tried on it using findroot as following :
...
- 81
1
vote
0
answers
46
views
Plot the graph with two best response functions, Mathematica
I have another doubt regarding Mathematica. This is probably another question that can be easily answered, but since I'm a beginner it's a while that I'm stuck.
Since I'm using Mathematica online, the ...
- 13
0
votes
1
answer
94
views
Is it worth learning Mathematica if I want to choose my career in Cloud Computing? [closed]
currently doing my Masters in Computer Engineering. Is it worth learning Mathematica as I am thinking of pursuing my career in the field of Cloud Computing?. If yes, I really appreciate any good ...
0
votes
2
answers
65
views
Table generation with random variates inside. Mathematica [closed]
I'm new on this forum, and I'm also a new user of the software Mathematica. For this reason, I'm sorry if my question will be unclear and / or dumb.
I have to make a numerical simulation with random ...
- 13
0
votes
0
answers
28
views
How to export raw data into a text file as columns?
I have used NDSolve to find the solution of sixteen coupled first order differential equations. It takes a lot of time to process, and I want to import this data into python for plots.
0
votes
0
answers
71
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Caputo-Hadamard fractional derivatine nonlinear equation system
I tried it make it solved and plot but im confused, NDsolve, DSolve, ParametricNDSolve didnt work. Please help me, and please write anything.Thank you.
...
- 1
-2
votes
2
answers
122
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How do I create cobweb iterations or stair steps **WITH ARROWS** to show attractive and repulsive fixed points for a graph? [closed]
I'm new to Mathematica, so I would appreciate any help. How do I create cobweb iterations or stair steps WITH ARROWS to show attractive and repulsive fixed points for this graph?
I want it to look ...
- 43
-2
votes
1
answer
101
views
How to plot an iterative function of y(n+1) against y(n) in order to analyze the convergence of real power towers? [closed]
I'm new to mathematica and was wondering how to plot an iterative graph for power towers. If there is a power tower y= x^x^x^x^x^x^... we can rewrite it as an iterative equation in the following way:
...
- 43
1
vote
1
answer
81
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Create Matrix with both matrices on the diagonal AND the upper diagonal? [duplicate]
I do know how to do this for matrices on the diagonal, but I can't figure out how to do this for matrices on both the diagonal and the upper diagonal. Can someone help me?
- 11
-1
votes
1
answer
75
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How to extract f from given data data in mathematica
How to get all f separately in a table in mathematica
T={{{a=0.3,b=2,c=5,f=5}},{{a=0.6,b=0.2,c=1.5,f=0.33}},{{a=0.13,b=2,c=7,f=11}}}
0
votes
1
answer
73
views
Plotting histogram from a list of bin boundaries and counts [closed]
If I use HistogramList (in mathematica) to create list of bin boundaries and bin counts from my data, can I use this list to plot histogram? I want to add the counts from various datasets before ...
- 57
0
votes
0
answers
65
views
1
vote
1
answer
184
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Mathematica Online & WolframAlpha Notebook Edition
My college provides a site license to Mathematica, including access to Mathematica Online. I daily use a notebook I created long ago, and it always works as expected.
I just opened a new file, and ...
- 1,755
1
vote
1
answer
58
views
Volume of List3DPlot with no function for ImplicitRegion
I have simulated a 3D plot for the crater created using laser ablation.
This was created using an imported excel file into mathematical.
I have tried studying ImplicitRegion. However, it requires a ...
1
vote
2
answers
191
views
Calculating Matrix Derivatives
I'm sorry if this is an easy question, but I'm trying to refresh my memory on calculating derivatives of matrix products and have been reading the Matrix Cookbook. I'd like to rebuild my intuition by ...
- 185
1
vote
2
answers
176
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Solving equation by mathematica and Finding value of b in an equation
I have an equation and I have tried solving it to find values of b but it doesn't give me any values
The equation that I have tried to solve is :
...
- 81
5
votes
1
answer
147
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How to install NCAlgebra to Mathematica Online
New Mathematica user, attempting to install NCAlgebra to Mathematica Online. Following instructions from https://github.com/NCAlgebra/NC/blob/master/README.md , I first tried:
...
- 51
-2
votes
1
answer
62
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How to convert traditional form of piecewise output into input piecewise function? [closed]
I have an output in this form. Let's say the f[s_,t_]:=output; When I try to calculate points at s, t e.g f[0.1,0.1], the output is still the same instead of any point.
but if I convert this output ...
- 1
-1
votes
1
answer
93
views
1
vote
1
answer
123
views
Accessing directories and files Mathematica Online
How does one access folders of Mathematica Online for Import-ing and Export-ing?
For instance, suppose I have created a folder ...
- 1,755
2
votes
0
answers
34
views
Editing stylized output on Mathematica Online
Suppose the output of Mathematica involves a square-root, such as shown in the image below, taken from Mathematica Online.
If one copies the output and pastes into a new input cell, the content ...
- 1,755
-1
votes
1
answer
125
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Integral $\int_{-\infty}^{+\infty}\frac{e^{-(x-\eta)^2}}{1+e^{x}}\,dx$ step-by-step solution
I am trying to solve the integral
$$\int_{-\infty}^{+\infty}\frac{e^{-(x-\eta)^2}}{1+e^{x}}\,dx,$$
for $\eta \in R$.
For example if $\eta=1$, the site gives that the integral equals 0.51, but I don't ...
-1
votes
1
answer
104
views
Please help me insert this example into Mathematica to illustrate the transformation
Please help me insert this example into Mathematica to illustrate the transformation
- 3
1
vote
1
answer
124
views
Correct code for 4th differential equation
How to code and solve the following equation in mathematica.
d^2/dx^2(x^2d^2u/dx^2)+b^2u=0
- 21
1
vote
1
answer
137
views
2nd order differential equation
Can the given equation be transformed to the Bessel equation?. If yes, how it can be transformed then?.
Y''(x)+a*Y'(x)+b^(2)*e^(2ax)Y(x)=0
- 21
1
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1
answer
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Solution of a BVP by Means of DSolve [closed]
If we consider the BVP $y^{\prime\prime}(t)=\frac{3}{2}y(t)^{2}$ where $0\leq t\leq1$ and $y(0)=4$ and $y(1)=1$. Then its solution is $y(t)=\frac{4}{(1+t)^{2}}$. I have set the BVP above as in ...
- 161
1
vote
1
answer
143
views
Mathematica failing to simplify ratio of pi-notation finite products
I'm wondering if the following behaviour could please be explained to me:
...
- 33
-4
votes
2
answers
189
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Wolfram Mathematica Code please [closed]
Consider two natural numbers of two-digits, like 46 and 96. They have the property that by exchanging the place of their digits and multiplying the so obtained numbers, we get the same product; i.e.,
<...
-2
votes
1
answer
91
views
how to find and b piecewise function mathamatica [closed]
how would i find a,b for
how would i write this in Mathematica to get a and b
-3
votes
1
answer
53
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Proof: Ratio of Cauchy distribution [closed]
I have a problem that I have been struggling to prove.
Can someone help me with proving this following question, please ? :
Thanks
- 1
1
vote
0
answers
52
views
How to give constraints of two parameter optimization in Lagrange multiplier?
In the lagrange multiplier method, the equations are :
f[x_,y_]:=x^2+y^2
g[x_,y_]:=6x+8y
The range of x and y values are 0<=x<=0.9, 0<=y<=10. How can I give the mentioned range of values ...
0
votes
1
answer
39
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Why won't ChartLabel print the right country under the right bar chart?
I'm working on an assignment and I can't seem to print out the right country name under the right bar chart. What is the problem? Why does the second country only print out?
Ignore some of the words (...
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