Mathematica

Mathematica

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## Program for universal enveloping Lie algebra Su(3) in Mathematica

From information in internet, particular this link: http://forums.wolfram.com/mathgroup/archive/1999/Nov/msg00213.html It was interseting problem of " How to do Lie algebra in Mathematica". Now,our ...

## Fanciest way to include Mathematica code in LaTeX

I am trying to include a Mathematica code in LaTeX. To obtain the Mathematica code I just exported notebook as PDF. I didn't like the way it was included in my TEX code so I just thought of adding a ...

## Anyone using Emacs as front end of Mathematica?

So much I'm missing the Emacs power when I (have to) stay inside Mathematica editor. I saw a few mathematicas-mode, but they are all outdated... Any suggestions?

## Floating point math rounding weird in C++ compared to mathematica

The following post is solved,the problem occurred because of miss interpretation of the formula on http://www.cplusplus.com/reference/random/piecewise_constant_distribution/ The reader is strongly ...

## FindRoot[rhs==lhs, {X,x1,x2}] Vs. FindRoot[rhs==lhs, {X,x1}]

What is the difference between these two commands: FindRoot[rhs==lhs, {x,x1,x2}] and FindRoot[rhs==lhs,{x,x1}] They give me completely different solutions. Thanks

## Extracting coordinates from a Mathematica spline graphics

How can one extract the coordinates of all the points which make up the following graphics (here just an example)? spl = BSplineCurve[{{-.4, -.3}, {0, -.6}, {.4, -.3}, {0, -1.2}}, ...

## Convert mathematica functions to lua

I want to read files written using the Mathematica function 'Save'. Inside, their are expressions that I would like to translate in lua. For example: mathematica -> lua foo[bar_]:= a*bar + b ...

## How to custom the display order of polynomial in Mathematica

For example, I have A = a*c*b + d*c*b + d*c*t Where b and t are more like variables and a,c,d are more like parameters. It would be displayed as a b c + b c d + c d t what I want is let it be ...

## Stephen Wolfram's Rule 30 pattern clarification

The problem I was going through the methods by which Wolfram's Mathematica generates random numbers and found that it uses the Cellular Automata Rule 30. The underlying explanation of it goes as ...

## Newton backward interpolation in Mathematica

I have the following task: Create a function (in Wolfram Mathematica), called $\mathrm{NewtonBackward}$[n_,x0_,h_,f_] which interpolates backwards the function $f(x)$ with nodes {x_i = x_0 + ...

## How can i fix a multiplicity issue in mathematica 10.0 loop?

I am solving a project in Mathematica 10 and I think that the best way to do it is using a loop like For or Do. After build it I obtain the results I looking for but with a to much big multiplicity. ...

## LinearSolve in wolfram mathematica

I have problem with linearsolve in mathematica. I have a system like Mx=A. M is 3x2 matrix with complex elements. x is 2x1 matrix with elements x1 and x2. A is 3x1 matrix with complex elements. So ...

## mathematica dynamic shifter list

I want a shifter list for a input buffer. My code is: //Simulate input whit Slider. Is work perfect. Only work for changes by the user. list = Table[0, {10}]; Slider[Dynamic[b, (b = #; list = ...

## A table returns {{Null, Null, Null}, {2 Null, 3 Null, 4 Null}}

If I declare some parametrs to my function for example: cube[3, {{1, 1, 1}, {2, 3, 4}}] It returns something like this: {{Null, Null, Null}, {2 Null, 3 Null, 4 Null}} Where could be a problem? I ...

## Closed form expression for 3F2 with positive unit argument

Is there any closed form expression for the Hypergeometric function ${}_3F_2(-n,-n,c;-d/2-n,-d/2-n;1)$ for $n>0$ and $d>0$. The parameter $c$ can be both positive and negative.

## The positive root of the transcendental equation $\ln x-\sqrt{x-1}+1=0$

I numerically solved the transcendental equation $$\ln x-\sqrt{x-1}+1=0$$ and obtained an approximate value of its positive real root $$x \approx 14.498719188878466465738532142574796767250306535...$$ ...

## How to skip warnings in a loop [wolfram-mathematica]

My goal is to read in data on all the available stocks at NASDAQ using FinancialData[], and do some computations on it. The problem is (I already contacted the support because of this and it is a ...

## Mathematical Issue: Triangle, Pyramid, Rotation, Translation, Zoom

Another tricky question. What you can see here is my physical pyramid built with 3 leds which form a triangle in 1 plane and another led in the mid center, about 18mm above the other 3. The 4th one ...

## Labeling in Mathematica to match the font size same as in LaTeX

I have some plot Plot[a, {a, -6, 6}] I need to use it in Latex. However the problem is that labeling text style in Mathematica does not match with LaTeX text. So what I do, I copy the figure ...

1 answers | Feb 28 at 11:39 by zenith on tex.stackexchange.com

## How can I do a Get on an InputStream?

One annoying thing of encoded packages is that they have to be in a separate file. If we want to distribute a simple self contained app (encoded), we need to supply two files: the app "interface", and ...

3 answers | Feb 27 at 23:47 by P. Fonseca on stackoverflow.com

## Basic Gamma functions identities not verified with Mathematica

Mathematica V10 does not return True to the following lines of code: Simplify[Gamma[z] == (z - 1)!, Element[z, Integers] && z > 0] Simplify[(Gamma[1 - z] Gamma[z]) == Pi/Sin[ Pi z] , ...

1 answers | Feb 27 at 17:58 by wojtek on stackoverflow.com

## How do you make a parametric plot of a table of functions in Mathematica?

I am trying to generate a family of curves in a parametric plot (since the function is giving x as a function of y), but I am getting either nothing or clearly incorrect functions. Is there something ...

## Selecting random values in a set in mathematica

I have a set which has {0} and other 8 elements, total 9 elements. I want to choose random 3 value in this set and create a 3x1 column matrix. This will repeat all possible choices in the set. How can ...

1 answers | Feb 27 at 7:30 by ilker on stackoverflow.com

## Entering coordinates of a point using the keyboard in Mathematica

As I can enter the vertices of a triangle shape A (x1, y1), B (x2, y2), C (x3, y3), using the command "Input" Something like this, but more elaborate x = {}; n = 3; k >= 0; a = 0; b = 0; c = 0; ...

## How to import a txt file as a list in Mathematica?

So I need to import a txt file into Mathematica and plot the data using the ListPointPlot3d. My txt file data is of the exact form (3 columns, 3 rows) 1.000 1.323 2.010 1.003 1.071 1.958 1.013 ...

## Thread::tdlen: Objects of unequal length error in wolfram mathematica

I have error that Thread::tdlen: Objects of unequal length in {0.*10^-16-1.000000000000000 I} {{0,0,0},{0,1,0},{0,0,0}} cannot be combined. >> {0.*10^-16-1.000000000000000 I} ...

1 answers | Feb 24 at 21:23 by ilker on stackoverflow.com

## Mathematica NIntegrate function in C++

I am working on computing a challenging integral. I am working with someone else who wrote some code in Mathematica to compute it. I do not have mathematica so I am trying to do the same thing in C++. ...

## Constrained Optimization in Mathematica

I am trying to do the simplest of constrained optimizations in Mathematica but it just wont work and I dont know what I am doing wrong. I just want max ln[x]+ln[y] subject to 10=x+y. This can simply ...