Skip to main content

Questions tagged [mathematica-online]

For questions specific to the Wolfram product Mathematica Online.

Filter by
Sorted by
Tagged with
0 votes
0 answers
22 views

Find directional accuracy for combined forecast of ARIMA model and GARCH model

/* i want to use the below equation in the following forecast code */ ...
VishnuPrasad 's user avatar
0 votes
0 answers
51 views

Tracing the trajectory of a rotating coordinate system [closed]

I am trying to animate a rotating coordinate system around fixed cartesian coordinates.I want to trace the path by x',y' and z' rotating coordinate (meaning I should be able to see the traced-out path ...
SanGu's user avatar
  • 63
0 votes
1 answer
99 views

Need explanation on data[[i]][[1]]

I am trying to train a physics model and then check its profile. For this model, data for physics model is defined with: ...
Dean's user avatar
  • 655
0 votes
0 answers
56 views

Numeric coefficients of a series/polynomial

In my work, i usually come across expressions of the form: $$\text{L3}=\frac{625 f_5^{30} q^4}{f_1^{31}}+\frac{24458 f_5^{24} q^3}{f_1^{25}}+\frac{25436 f_5^{18} q^2}{f_1^{19}}+\frac{25415 f_5^{12} q}{...
Sangama's user avatar
  • 23
0 votes
1 answer
130 views

Mathematica code to compute a constant

I am reading an interesting paper One of the numbers ζ(5), ζ(7), ζ(9), ζ(11) is irrational by Zudilin. We fix odd numbers $q$ and $r$, $q\geq r+4$ and a tuple $\eta_0,\eta_1,...,\eta_q$ of positive ...
Max's user avatar
  • 145
3 votes
4 answers
170 views

Sort Column as a Row

I have a = {1, 2, 3, 10}; b= {2, 3, 4, 8}; t= Do[If[a[[i]]+b[[i]]>3,Print[a[[i]]],"No"],{i,1,4}]; 2 3 10 I need to get the result; t={2,3,10}
Alyasaa Jasim's user avatar
1 vote
0 answers
45 views

Save the mathematica notebook on cloud as PDF on System/Cloud

I am using mathematica on the free Wolfram cloud version. I first tried using the option of "Print to PDF" available under the "File" on the top of Nav Bar. However, it redirects ...
CuriousMind's user avatar
2 votes
1 answer
138 views

Bifurcation Diagram for x' = (rx) - sinx

I solved for finding the fixed points analytically for various ranges of u for x'[t] = (ux) - sinx for u = 0 0 <u <<1 u>1 0>u>-infinity and its a very complicated bifurcation ...
CuriousMind's user avatar
0 votes
1 answer
40 views

Get explicit formula after matrix derivation with Mathematica

I want to calculate the derivative of a matrix with respect to a vector with mathematica, and I would like to know if it is possible to have a formula as an answer instead of an expanded matrix. For ...
ZchGarinch's user avatar
1 vote
2 answers
144 views

Mathematica cannot solve this complicated integration

first-time here. I am trying to use Mathematica to evaluate a solution from Duhamel's principle, the integration looks like $\int^t_0\frac{e^{-ks-\frac{r^2}{2(2Ds+\sigma^2+2D_pt)}}}{2Ds+\sigma^2+2D_pt}...
CalBZ's user avatar
  • 11
1 vote
0 answers
89 views

How can I rasterize expressions with Runic characters in Wolfram Cloud?

Here is my function to create polynomials with a specific format: ...
Teg Louis's user avatar
0 votes
1 answer
111 views

Help in solving the following bvp

...
Trueee's user avatar
  • 41
4 votes
3 answers
142 views

I need help in complements of subsets

I have two subsets and tried this expression with MapThread: ...
Alyasaa Jasim's user avatar
1 vote
1 answer
160 views

Could anyone please help me find the error in the code

I have a problem with DSolve and the following code: DSolve[{D[Ψ[x], x, x] == κ^2 Ψ[x], Ψ[0] == Ψs, Ψ[Infinity] == 0}, Ψ, x] ...
Trueee's user avatar
  • 41
0 votes
0 answers
33 views

How Do I Graph an SVEIAR function with the reproduction Number

Just need help figuring out how to plot a graph of an SVEIAR model with its' reproduction number. I'm a bit confused on how to properly make a graph based off the model and reproduction number. ...
izayafiji's user avatar
0 votes
0 answers
52 views

I need help with plotting and SVEIAR Code with the Reproduction Number on Mathematica

I need help because everytime I plot it doesn't work. ...
izayafiji's user avatar
0 votes
0 answers
54 views

Solving polynomial roots of any degree only by Vieta's formula

I have already wrote the code that solves it for quadratic formula and I'm curious if this is possible to make that function work with any kind of polynomial(higher degrees) and solving roots only ...
Karol Bargieł's user avatar
0 votes
1 answer
70 views

How to make code for boundary value problem?

I am trying to make graphs given by using this code but I failed. Please correct this code. ...
riaz iram's user avatar
1 vote
1 answer
72 views

Animate function error

I'm new to Mathematica and I'm trying to plot a interactive graph of a curve with a slider that shows the tangent to the curve in whichever point of the interval, my implementation is ...
Weyr124's user avatar
  • 15
2 votes
4 answers
388 views

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 ...
Jamai-Con's user avatar
  • 163
2 votes
2 answers
496 views

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 ...
Mohamed Mostafa's user avatar
0 votes
0 answers
70 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? ...
INDRANIL MAITI's user avatar
2 votes
1 answer
82 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 ...
Zeriob's user avatar
  • 23
-2 votes
1 answer
120 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 (...
Sumit Sagar's user avatar
-2 votes
1 answer
85 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 ...
Natalaya's user avatar
2 votes
1 answer
82 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 ...
HadamardN2's user avatar
1 vote
1 answer
99 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. ...
HadamardN2's user avatar
-1 votes
1 answer
74 views

Triangle with three corners, find area f(a) and when function has its min-value

This is my code: ...
Leolo.11's user avatar
1 vote
0 answers
67 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 ...
INDRANIL MAITI's user avatar
0 votes
0 answers
38 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 ...
INDRANIL MAITI's user avatar
0 votes
0 answers
32 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 ...
HadamardN2's user avatar
0 votes
1 answer
50 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? ...
AAA's user avatar
  • 197
1 vote
1 answer
85 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 ...
HadamardN2's user avatar
2 votes
1 answer
98 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 ...
SKS's user avatar
  • 23
0 votes
0 answers
83 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 ...
Sanmit's user avatar
  • 1
4 votes
3 answers
579 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: ...
VIBHOR SINGAL's user avatar
2 votes
1 answer
74 views

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 : ...
A.J.H's user avatar
  • 81
1 vote
0 answers
54 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 ...
Gabriel T's user avatar
0 votes
1 answer
130 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 ...
Sai Polakam's user avatar
0 votes
2 answers
76 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 ...
Gabriel T's user avatar
0 votes
0 answers
30 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.
Syed Shahmir Kazmi's user avatar
-2 votes
2 answers
169 views

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 ...
boii's user avatar
  • 43
-2 votes
1 answer
117 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: ...
boii's user avatar
  • 43
1 vote
1 answer
122 views

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?
Bert's user avatar
  • 11
-1 votes
1 answer
77 views

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}}}
Pulakesh Borah's user avatar
0 votes
1 answer
107 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 ...
SR_00's user avatar
  • 57
1 vote
1 answer
222 views

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 ...
GregH's user avatar
  • 1,919
1 vote
1 answer
61 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 ...
Joy Kristelle De Mata's user avatar
1 vote
2 answers
345 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 ...
HonestMath's user avatar
1 vote
2 answers
180 views

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 : ...
A.J.H's user avatar
  • 81