0
votes
0answers
36 views

Curve moving on the torus [duplicate]

I'm trying to do parametric curve moving on the torus. Already have created sample torus : ...
3
votes
1answer
41 views

What options for project development exist if the Cloud and Mathematica Online cannot be used

Due to contractual obligations to protect IP and client information, we unfortunately, cannot use Cloud or Mathematica Online for development in the development of our projects. We are further ...
0
votes
0answers
51 views

Mathematica 10 cannot use EulerMatrix? [closed]

I am using Mathematica 10 on Linux 64-bit and the function EulerMatrix does not work. Is it related with an unloaded package or something? Does every copy of ...
-1
votes
1answer
59 views

moving of a material point on the surface - paraboloid spiral

I have to do project on my studies. I wanna place spiral in this shape. I'm stuck on this point: I have these details: z=4x^2+2y^2 spiral w= (0,0,0) spiral in up Do you have any ideas? Every ...
2
votes
0answers
85 views

How to use Mathematica to help me get highest score in every layout? [closed]

The game is hitting the headline in these day and everyone can click this link to play it.The game have a very simple rule like following: Game Rule It will give you a initial layout when you click ...
1
vote
0answers
42 views

Solving ode which solution oscillate violently

This is a ordinary differential equation: y[x]/(-1 + x^4)^2 - ((1 + 2 x^2 + 3 x^4 - 2 x^6) Derivative[1][y][x])/(x - x^5) + Derivative[2][y][x] == 0 I want to ...
2
votes
1answer
35 views

Export of all notebook files as text files

I want to export all my notebook files located in a root directory as text files. Below is a simple code that I use. Ho can I export "only" the necessary text content of each notebook file? ...
0
votes
0answers
27 views

Solving equations but cannot define argument [closed]

Hi everyone I am new to mathematica and I really need help now. The question is like this: I defined a function H(e1,e2) and I want to solve PDEs like ...
2
votes
0answers
15 views

How to change the default stylesheet?

How to change $\textbf{default} $ output font color in Mathematica? for instance : how to set following style as default And how to set the default magnification to 200% instead 100%
1
vote
2answers
44 views

expressing a rising factorial as a polynomial

I have an equation in $x$ as follows: $f(x)=\prod_{j=0}^{k}(j+x)=x.(1+x).(2+x)\cdots.(k+x)$ I want to express this as a polynomial in $x$, i.e., as $a_0x^0+a_1x^1+\cdots+a_kx^k$ I tried doing the ...
-1
votes
0answers
25 views

How to apply Image3D dynamically [duplicate]

I have a 3D image which is made up of a number of 2D slices. I want to select mophological components dynamically by clicking on them as done here for each slice. Then form a 3D image consisting of ...
1
vote
1answer
40 views

How to list all functions in a package? [duplicate]

I got a package which can be loaded in MMA. The manual for the package does not give demonstrations of all functions/commands. Hoe can i find all the commands in the package?
-4
votes
0answers
79 views

Bifurcation diagram for delayed dynamical system [on hold]

The delayed dynamical system describe as $\dot{x}(t)=y(t)-ax^3(t)+bx^2(t)-z(t-\tau)+I \\ \dot{y}(t)=c-dx^2(t)-y(t)\\ \dot{z}(t)=r[s(x(t)-e)-z(t)]$ where $a=1.0; b=3.0; c=1.0; d=5.0; r=0.006; s=4.0; ...
5
votes
3answers
283 views

Box plot combined with histogram and normal curve

Please forgive me if this is a relatively simple thing to do, but I'm relatively new to Mathematica and I've only recently started using it to visualise some statistics for my PhD work (I'm a linguist ...
0
votes
0answers
25 views

Mathematica Serious Startup Error [closed]

I am getting "Low-level WSTP error: Unknown internal error" during Mathematica 9.0-10.4.1 (tested with 9.0, 10.0, 10.1 and 10.4.1 fresh install) start-up on some specific Linux machine (x86_64, ...
2
votes
1answer
204 views

Make a fractal-like dot animation

How to make an animation of following fractal-like gif by using Mathematica?
5
votes
4answers
439 views

How to simplify block of multiple repetitive If statements?

I'm building a boardgame...game in Mathematica. I have the board state represented as a matrix. It's a two player game, and each player (let's call them A & B) only has one type of piece or ...
0
votes
2answers
82 views

Jump boundary conditions

I'm having the following issue that can not find a solution , by using this boundary condition ...
5
votes
1answer
122 views

Strange DiracDelta integration results in 10.4.1

Integrate[DiracDelta[s (x - c)] x, {x, -Infinity, Infinity}, Assumptions -> {s > 0, c > 0}] gives me c/s in ...
3
votes
4answers
122 views

Find the length of the intersection of two lists including duplicates

I have 2 Lists. The first one includes all the numbers from 1 to 10. listA={1,2,3,4,5,6,7,8,9,10} The second includes ...
4
votes
1answer
27 views

How is Attributes protected and yet can still be set?

The Attributes function itself has the attributes: Attributes[Attributes] ...
0
votes
0answers
27 views

Reading a set of files in Mathematica in Parallel [on hold]

I have a number of very large files (each one of them containing a single list) that I want to import in Mathematica. Reading these files on a single core takes a couple of minutes. Since I run my ...
1
vote
0answers
74 views

How to “INJECT” with holding Evaluation, specifically into a WhenEvent

I am importing a set of differential and stochastic equations from an external package, and want to use Mathematica to analyse this. I am struggling building the set of equations that I can use with ...
0
votes
1answer
46 views

Manipulate a plot with display of a condition

This is a how to question --- the example is without importance. I want to manipulate the plot of say a x^2 + b y^2 for (a,b) belonging to a specific set, but a + b > 0. Is it possible to make ...
-2
votes
0answers
15 views

ArrayPlot arguments [closed]

ArrayPlot[initLat, ColorRules -> {1 -> White, -1 -> Black}, Mesh -> True, ImageSize -> Small] ArrayPlot::argt: ArrayPlot called with 3 arguments; 0 or 1 arguments are expected. Thanks!
0
votes
0answers
31 views

Pade approximants for Taylor series using mathematica [on hold]

fluid-dynamics In running Pade Approximants for taylor series to rationalize using Mathematica for higher degrees, the program gets hanged. What can be the reason ?
0
votes
0answers
30 views

Pass List / Vector argument through NDSolve to a function

I am trying to pass vector or list as argument to the function from NDsolve.And I am getting these error. Also I am pretty new to stack overflow. Apology if this a possible duplicate. Here is my code. ...
3
votes
1answer
55 views

“Most compatible vector representation”

When saving a plot through right click ► Save Graphic As…, Mathematica lets me choose several options, including separate vector representations for areas with ...
1
vote
0answers
37 views

Periodic boundary condition trick

I'm plotting a curve on a compact space which is having periodic boundaries on the left and right parts. Currently, the code I'm using is working great, but I'm wondering if there's a simpler and ...
10
votes
3answers
189 views

How to describe the convex hull of a set of points as an implicit region for optimization?

Last edit: 2016-05-03 A.G.'s answer was the one helped me the most, see explanation at the end of this question. Original question In Mathematica you can create out of a set of points in 2D and 3D ...
0
votes
1answer
46 views

Need help extracting data

I'm a teacher on a $20,000/year salary so I'm using Wolfram Programming Lab online to experiment with Mathematica scripts to save money (although I'm hoping to get a raspberry pi as a birthday present ...
1
vote
1answer
35 views

portions of plot missing for a relatively simple function

I am trying to produce a graph of the linear dynamic system response to a step input. The code is as follows: ...
0
votes
1answer
42 views

Metric Simplify & grouping

I'm changing a basis from one metric to another. When simplifying the result Mathematica doesn't seem to grasp all the possible simplification: ...
0
votes
0answers
25 views

Is there a way to save the output from integrate as a function? [closed]

Is there a way I can save the result of my integration as a function? I would like to be able to assign the result of this integration to a function which accepts ...
1
vote
1answer
48 views

FunctionInterpolation on a 2D function does not match original function when plotted together

I met with a problem when trying to find the interpolation function of a 2 variable function. The function is like below (already simplified for brevity): ...
4
votes
0answers
103 views

Is there an internal logic behind short form symbols, such as @ (Prefix), @@ (Apply), /@ (Map), /. (ReplaceAll) [closed]

To me, function names (such as Apply and Map) seem more intuitive than their symbols (e.g. ...
7
votes
1answer
121 views

Map vs listable [duplicate]

What's the difference between setting a function's attribute as Listable and using Map? I understand that ...
0
votes
2answers
78 views

Free-fall air resistance problem

I´m working on a free fall problem and I got an equation with variable $k$ when the situation has air resistance. Then I compared with no air resistance equation ($-4.9$, considering t variable). So, ...
8
votes
1answer
71 views

How can I identify which solution triggered the WhenEvent?

I am using NDSolve for problems like this: ...
1
vote
1answer
81 views

Drawing spheres with texts on top of each other without overlapping [closed]

I want to use Graphics3D to draw a sphere with a text on it. Then, I'd like to draw another sphere (with a different text on it) on top of the first one. This is the code I'm using ...
1
vote
1answer
48 views

Subscripted variables give errors in Module expression [closed]

I have following problem. I want the R not to calculate before the integration but substitute later as a function of z. My Mathematica codes look like: Codes like big, (sorry) but most of them ...
2
votes
0answers
60 views

Ramanujan's asymptotic formula for $p(n)$

The following expression is the exact formula of partition function. Ramanujan's asymptotic formula for $p(n)$ is following $$p(n)\sim\frac{1}{4n \sqrt{3}}e^{\pi \sqrt{2n/3}}$$ Can I use ...
1
vote
2answers
52 views

MMA gives error when a different PDF expression is used for the same distribution

I have the following MMA code. Note that the function I declared at the very beginning is the PDF of square of a Nakagami Distributed random variable. With $m=1$ and $P=1$, $f(h)$ becomes Exponential ...
-3
votes
0answers
36 views

Polynomial Equation/Function With Even Degree Order [closed]

I have the following data for $x$ and $y$ axis, which I am reading from an Excel file by using the Import command and plotting by using the ...
8
votes
2answers
71 views

How to use `Except[]` inside of `Pick[]` [duplicate]

Pick[{1, 2}, {0, 1}, Except[0]] returns {1, 2}, the first element of which I did expect to be excluded. What is the thing I ...
8
votes
1answer
105 views

How can I use Mathematica to make a captcha image?

This was inspired by this post which is about the serious business of website deployment in the Wolfram Cloud, and interaction with Google's reCaptcha system. I started thinking of how to make those ...
0
votes
1answer
50 views

How to find this probability with PDF from TransformedDistribution?

I need to find the expression for the following equation, where $m>0$ ...
1
vote
1answer
66 views

Inconsistent Integrate behavior?

Evaluating the following integral with Mathematica Integrate[q0/(-1 + q0^2), {q0, 0, A}] gives a conditional expression ...
2
votes
0answers
56 views

Interface design to replace cascading dialogs which don't work

I would like to make a nice Interface of a simulation I wrote, but i don't know how. I want that you run the code and then a window asking for input of some values appears (either in the same ...
9
votes
6answers
556 views

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