For help with mathematical questions arising from software such as Maple, MATLAB, Mathcad, Pari/GP, R, and the WolframAlpha website, etc. Consider posting questions about Mathematica at the Mathematica StackExchange instead. For GAP, SAGE, and MAGMA, one might use tags (computer-algebra-systems), ...

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20
votes
5answers
4k views

Online MathJaX editor

I suspect this might easily be a clone question, it seems impossible that nobobdy would've asked this before, but my searches seem to return nothing. I've grown very used to the MathJaX input here. ...
4
votes
4answers
151 views

Finding a Function That Approaches Another Function

One of my math professors gave me the following challenge. It isn't graded, it's just for fun. Consider the function: \begin{equation*} f_n(x)=x+3^3x^3+5^3x^5+...+(2n-1)^3x^{2n-1},~x \in (0, 1). ...
10
votes
2answers
362 views

Math-related open source software to contribute to

I'm interested in finding a math-related open source project that I can contribute to. I've studied maths and stats at undergraduate level, but I'm a professional software developer and I'll have some ...
1
vote
0answers
42 views

rotation matrix - satellite control system

I am in charge with developping a satellie control system. There is something that I either understood incorrectly or either is wrong in the explanation. I am checking if I am able to get the values ...
6
votes
2answers
335 views

What are well-known weaknesses of CAS/math software?

I'm starting to become more functional in Mathcad, so I wanted to take the opportunity to look into known drawbacks, mathematically speaking, of CAS/computer math systems. For instance, one of the ...
0
votes
3answers
47 views

Mathematics software to carry out iterations of Newton-Raphson method?

I made this post a while ago, and I understand everything now. The problem is that I'm not sure what mathematics software I can use to generate the iterates like the user Amzoti did. His account has ...
15
votes
7answers
541 views

Looking for Open Source Math Software with Poor Documentation

I'm a techie who is looking to transition to technical writing as a career. It's been suggested that I produce documentation for an Open Source project to demonstrate my ability to do technical ...
3
votes
1answer
68 views
0
votes
0answers
36 views

Looking for math software

I'm looking for a software or a tutorial on how to write my own math software which will solve equations from the value i input. As an example: I will program the following equations into the ...
0
votes
2answers
124 views

online software to draw generic graphics for calculus and analysis?

could you mention any software in which I could design images like this.
5
votes
1answer
117 views

Best program for creating educational math animations?

I'm looking for recommendations on what program to use for creating mathematical animations. These animations will be used in creating educational videos for high school math -- Trigonometry first, ...
4
votes
3answers
231 views

OCR: some App to calculate the derivative on a line graph with iPhone/iPad?

Problem I have a set of points like the ones shown on the right hand side of the image. So for each 'Ships Head' there is a corresponding value for 'Deviation'. In this example we can treat west ...
0
votes
0answers
11 views

R^2 in Generalized Linear Models

I am trying to model relationship between predictors and explained variable in R using glm() function. I've found quite good model that gives me satisfactory results. Is there some way how to ...
1
vote
1answer
69 views

Writing equations without latex (for labelling, classification, structure analysis and rendering according to mathematical meaning)

I'm searching a solution to write equations other than (but compatible with) latex. While latex is excellent for math rendering, it is not suited to describe the structure or meaning of the equations. ...
1
vote
1answer
128 views

Finding a root by bisection method in Excel

Working on a maths assignment and we're trying to use Excel for a bisection method. $$\frac12 e^{x/2}+\frac{1}{2x}-\frac32=0$$ Here is a pic, I can't get the formula to work with the exponent. This ...
0
votes
1answer
2k views

software to draw geometry 2D, 3D

I am looking for a software to sketch moving figures as this one. Thanks.
0
votes
2answers
834 views

Software to draw easily sectors with angle on it

I want to draw a sector with the angle on it. I have tried several tools but didn't find any easy way of doing it.
7
votes
1answer
983 views

How do I plot multi case function in wolfram or geogebra?

How do I plot the following multi case function in wolfram or geogebra? $$ \begin{eqnarray*} f(x) = \begin{cases} 1, &\text{if }x \text{ is an integer}, \\ 0, &\text{if }x \text{ is ...
6
votes
3answers
901 views

Software to render formulas to ASCII art

I guess all computer algebra systems have command line interfaces which render formula as 2D monospace "ascii art". But the only standalone tool to render TeX to 2D I know is ...
1
vote
2answers
74 views

What is a good free software to draw complicated Venn diagrams?

The important feature I want is this : I would like to draw two sets as say ovals in solid line but I would like to have the border line in some neighborhood of their two intersection points to be ...
1
vote
0answers
131 views

Cabri 3D - Rotating a triangle

I'm given the exercise, in Cabri 3D, to rotate the triangle T around the axis AB and lead it via the triangle To to the triangle T'. I tried to rotate the triangle T around a fixed point and then ...
1
vote
1answer
48 views

Finding the function of a parabolic curve between two tangents

Alright folks, first question here so let me make the situation and background clear. I'm attempting to start studying for aerospace engineering, so I'm working on improving on my math skills as we ...
1
vote
3answers
149 views

What softwares are convenient to draw a quiver?

I would like to draw some quivers in a mathematical paper. What softwares are convenient to draw a quiver? Thank you very much.
4
votes
4answers
159 views

Why can you not omit the '*' sign for multiplication in Sage, Matlab, and other mathematical software?

Question I have some experience with Sage and Matlab. Both mathematical software packages require you to have the '*' sign when multiplying symbolic variables with integers. For example, in Matlab ...
1
vote
0answers
19 views

On Procedure Constrained Matrix Factorization

Given rank $r$ $A\in\Bbb R^{n\times m}$, is there a procedure to find $XY=A$ such that $X\in\Bbb R^{n\times r}$, $Y\in\Bbb R^{r\times m}$ with property that $\max_{i,j}|x_{i,j}|$, ...
3
votes
3answers
305 views

A bug with the WolframAlpha computational search engine?

I think I may have discovered a bug with WolframAlpha. So I was trying to determine all $x$ such that $$\sum_{i=0}^{5}{x^{-i}} < \frac{13}{12}.$$ WolframAlpha spit out $x > 13$ (see this ...
0
votes
0answers
22 views

Computational verification request

Let $I(x) = \sigma(x)/x$ be the abundancy index of $x$. Note that $\sigma$ is the classical sum-of-divisors function. Previously, I computed for $u$ in the inequality $$\sqrt{3} < ...
1
vote
1answer
30 views
0
votes
2answers
32 views

How to start using R (or free alternatives)?

How to start using software R to make regression analysis and forecasting? Are there any other free software to work with this kind of analysis?
0
votes
0answers
15 views

models to experiment with game theory?

I want to learn game theory from a practical point of view. Does anyone know if there exist programs that illustrates the utility of game theory? Or books that contains MATLAB simulation of games? ...
0
votes
2answers
57 views

what is the proof for matrix multiplication being commutative

I understand that if we have matrix $A$ and $B$ then $A \cdot B \neq B \cdot A$ as when you multiply the matrices in a different order, then their cells will shift in another form, thus making their ...
2
votes
1answer
63 views

Help in making an animated locus is needed [closed]

I have triangular cardboard ABC, right angled at C. As shown in the attached, initially, A and B are resting on the x- and y- axes respectively. A is then allowed to slide along the x-axis with B ...
29
votes
7answers
1k views

What is your favorite online graphing tool?

I'm looking for a nice, quick online graphing tool. The ability to link to, or embed the output would be handy, too.
0
votes
0answers
40 views

Geometry software

I have some computer graphics programming experience, not so long ago, I understood that I haven't grwat experience in math and there is some problem. So, im learning math and coding at the same time. ...
0
votes
0answers
32 views

How do I put this differential equation into mathcad 11

$$\frac{d^2y}{dt^2}+\frac{dy}{dt}+2y(t)=sin(t)+2e^{-2t}-2$$ I want to put this into mathcad, and then solve it numerically. I would also like to plot the solution. Sorry for the link, wasn't sure ...
1
vote
0answers
36 views

Lower bounds on possible integer relations from the PSLQ algorithm

For the equation: $$ \sum_{i=1}^na_ix_i=0 $$ where all $x_i$ are real numbers and all $a_i$ are integers, the PSLQ algorithm can either find an integer relation or give lower bounds on the norm of ...
2
votes
1answer
183 views

Software for drawing braid-related graphs

I am looking for a (preferably free) software that can draw braid-related graphs, such as and (Quoted from A Study of Braids By Kunio Murasugi, B. Kurpita) I have seen this question, but the ...
16
votes
3answers
7k views

How to cite preprints from arXiv?

Obviously when writing a math research paper it is good to cite one's references. However, with the advent of arXiv, oftentimes a paper is only available on arXiv while is awaits the long process of ...
1
vote
0answers
78 views

Any online Legendre polynomial calculator?

Do you know if there is any online calculator to calculate Legendre polynomial's coefficients? And combined with a graphing utility would also be desirable. Thank you for your time and help.
0
votes
2answers
60 views

What are the limitations of modelling a piano sound with the 'play' option of the software Wolfram Mathematica?

'Play' is an input availabe on Wolfram mathematica, which shows how a wave would sound and I am asking myself what the limitations of this input are, in what aspects it does not represent 'real' sound ...
2
votes
3answers
385 views

Find generators of a group in GAP

This is a question in the mathematical software called GAP: What is the command for displaying all the generators of a given group? I have been searching around but yet not found anything helpful, ...
0
votes
2answers
46 views

Math and geometry software to create instructional videos

I am looking into starting an amateur project for online tutoring. I need a math/geometry program that I can use to create shapes, graph functions, and create animation. I know of many types of ...
2
votes
2answers
89 views

Request for apps for Mathematical Drawing [duplicate]

I have been for long looking for some software apps which can help me draw various mathematical and geometrical figures and drawings.Can someone please tell me something about these which will run on ...
1
vote
0answers
124 views

Are there any programs like family echo that I can use to map mathematics?

Family echo is an online program that allows one to make a family tree, if nothing is clicked it shows most of the family tree as it is, but if one clicks a name one can see clearly all the ancestors ...
58
votes
1answer
3k views

About Euclid's Elements and modern video games

Update (6/19/2014) $\;$ Just wanted to say that this idea that I posted more than a year ago, has now become reality at: http://euclidthegame.com/ 12.292 users have played it in 96 different ...
94
votes
5answers
11k views

How were 'old-school' mathematics graphics created?

I really enjoy the style of technical diagrams in many mathematics books published in the mid-to-late 20th century. For example, and as a starting point, here is a picture that I just saw today: ...
4
votes
1answer
191 views

How do I substitute a value into a polynomial in GAP?

Question: How do I substitute a value into a polynomial in GAP? So, if I start off with the following: x:=Indeterminate(Integers,"x"); f:=x^2+3; I have $f$ ...
1
vote
2answers
123 views

Graph Theory Software with simple GUI

To the best of my knowledge I cannot find, on this site, any graph theory program resources. I am looking for a program where I can draw nodes and edges and most importantly drag and drop vertices ...
2
votes
2answers
428 views

Drawing lattices

I would like to be able to draw the lattices of subgroups of certain groups. I thought it would be easy when I already know the structure, but I've never done it before, and it turns out it's harder ...
1
vote
2answers
417 views

Why doesn't this work in Geogebra

I've got a really simple equation that I want GeoGebra to plot: $\sqrt {2x}-\sqrt {3y} =2$ It says it's an illegal operation so I try: $3y=2x-4\sqrt{2x}+4$ When this doesn't try, I try changing ...