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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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
65 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 ...
2
votes
1answer
44 views

Is there any Software package to confirm correctness of your derivation steps?

Suppose I made a very complicated (not necessarily difficult) derivations in which it is very likely for anyone to make some silly mistakes, e.g., incorrect sign, overlooking a term, and so on. I ...
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vote
4answers
138 views

Best program for 3D plotting

I've hit a roadblock with pgfplots where it has difficulty plotting multiple functions at the same time in 3D. As it states in the manual on page 114, "it cannot combine different \addplot commands, ...
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0answers
44 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. ...
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0answers
35 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 ...
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0answers
38 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
188 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 ...
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0answers
84 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.
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2answers
52 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 ...
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vote
0answers
138 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 ...
2
votes
2answers
97 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 ...
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2answers
132 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 ...
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vote
1answer
35 views

Solving linear functions with constraints.

I have a table of data, for maximum available items in a given time period. With a constraint on how many of each items I can take in total. When I have taken the allowed amount of an item I can ...
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1answer
134 views

What are good programs for writing expressions?

By writing expressions, I mean intermediate expressions to "show your work," such as the ones in the below image. LaTex would seem like overkill for such problems.
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vote
1answer
42 views

How to return the monomials in a polynomial in Maple?

Are there some function $f$ which returns the monomials in a Laurent polynomial? For example, $f(a_1^{-1}+3b_{2,1})=[a_1^{-1}, 3b_{2,1}]$. Thank you very much.
2
votes
1answer
55 views

Question about GIMPS (Great Internet Mersenne Prime Search)

Not sure if this is really an adequate question here, but I found no other place to turn. I'll understand if this gets closed. I recently learned about the GIMPS project, and installed it on my ...
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2answers
24 views

Return factors of a monomial in Maple.

Let $$ m = Y_{{1,0}}{Y_{{1,2}}}^{2}Y_{{2,5}}Y_{{1,8}}. $$ Using the function op in Maple, we have $op(m) = Y[1, 0], Y[1, 2]^2, Y[2, 5], Y[1, 8]$. But $op(Y[1,0])=1,0$ and $op(Y[1,0]^2)=Y[1,0],2$. Are ...
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1answer
68 views

Math software to calculate in different rings.

I was doing computational experiment by using rings of polynomial like this let $f(x)=x^6+x\in\mathbb{Z_n[x]}$ for any given $n$. Is there any software which help me to calculate $f(a)$ where ...
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0answers
38 views

Program for playing around with aperiodic tilings

I know this is technically a software question, but I figure the mathematicians here would know more about it: I'm looking for software to play around with different "paintings" (different patterns ...
2
votes
2answers
152 views

How to show result in terms of $\pi$ in Mathcad?

Is it possible to display a result in Mathcad as a function of $\pi$? I'm studying physics and I need to show exact results at the exams. I know I can set Mathcad to give me the result in ...
3
votes
1answer
100 views

How to implement a group action in Sage ( for educational purposes )?

Let S= {"A","B","C","D"} and S4= SymmetricGroup(4). I want to create a table of the action S4 x S -> S which standardly permutes the letters in the set. The table should look like: ...
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0answers
14 views

Engineering - Appropriate concrete grade for supporting structure under wind loading?

I have a concrete tower/pier/supporting structure for a bridge. As part of the design, I need to consider SLS checks for wind loading on the tower before the deck, cables etc are built, so ...
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vote
1answer
96 views

Behaviour of the sequence $u_n = \frac{\sqrt{n}}{4^n}\binom{2n}{n}$

Let $n\in \mathbb{N}^{*}$, let ${\displaystyle u_{n}={2n \choose n}\sqrt{n}\ 4^{-n}}$ Show that $(u_{n})_{n}$ is convergent and ${l.e^{-\frac{1}{8n}}<u_{n}<l}$ The original text i'm ...
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vote
1answer
56 views

Semantic tableau software

Is it possible to find software to perform semantic tableaus (as described in http://en.wikipedia.org/wiki/Method_of_analytic_tableaux) automatically? Right now I am proofing it by hand.
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0answers
58 views

QQ-Plot on R for censored data.

I have plotted a qq-plot on R for a data set which is assigned the value -0.25 for any values below -0.25. However on the qq plot it plots all the -0.25 points, I have been told there is a way to plot ...
2
votes
1answer
99 views

Solving equation with integer matrices as unknowns

I am currently working on a problem, where I need to know for square integer matrices, $A$ and $B$, whether or not there exists square integer matrices, $X$ and $Y$, such that $X(A-I)Y=B-I$, where $I$ ...
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votes
2answers
65 views

Can Apple's Grapher evaluate a function?

I just noticed that Grapher fails to evaluate a function at a constant. In the image, the graph of y = c should of course be a horizontal line. Is there a way to fix or work around it? This seems like ...
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2answers
262 views

How to make your own supply/demand graphs on a computer?

This is an econ question but I think you guys might have the solution. I am writing an economics paper and I need to show, in my theory, shifts in the supply and demand that I predict. I don't have ...
2
votes
0answers
57 views

Finding newforms with Sage

I am new to Sage and modular forms. I have some conceptual questions. When I write sage: S = CuspForms(Gamma0(55),2,prec=14) sage: S.new_subspace().basis() ...
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vote
1answer
31 views

Is there a way to change default order of series in Maple?

The default order when expanding in the software Maple is 6 (six!!!). This is very awkward and annoying because one rarely need even the second (non-trivial) order. In any case, is there a way to ...
3
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0answers
60 views

Software for Braid Groups

I am looking for software/online tool that works on Braid Groups. I am aware that there are resources that allows you to draw braids by imputing generators or detect whether two braids are equivalent ...
2
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0answers
89 views

Software to solve basic set equations (in algebra of sets)?

What symbolic math software is able to solve basic set equations? E.g. $X \setminus A = C \setminus X $, for $X$
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1answer
77 views

a math-software that can compute analytic spread

I want to compute "analytic spread" . So I need a math-software that can compute it. can anyone help please? Here is the definition:
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vote
1answer
140 views

Graphing inequalities on a number line

What software or websites for graphing inequalities on a real number line?
2
votes
1answer
70 views

Finding the least prime of the form $6^{6^6}+k$

I try to find the least prime number of the form $6^{6^6}+k$. I sieved out the candidates by trial division upto $10^6$, but there are still many candidates left upto $k=10000$ How can I further ...
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0answers
443 views

Low rank approximation using CVX toolbox in Matlab

I try to use CVX toolbox to do "low rank approximation" work. The code is as follows: ...
1
vote
1answer
36 views

Scaling axis on Mathematica's plots

I'm trying to get the plot below only I want the ratio y:x to be 1:1 instead of 2:1. I want the ellipse to look tall and slim instead of short and fat. Here's the code line if you want to copy and ...
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0answers
20 views

Form Poset from (Non-zeta) Matrix

I have a matrix (well, really a table) of values that are the results of various indicator systems. Naturally, each system is slightly discordant, so no one true ranking exists. I'm looking to form ...
1
vote
2answers
143 views

Tools for understanding Abstract Mathematics

I want to explore the concepts of Groups, Rings and Fields for practical application. Are there beginner-friendly tools available to simplify, accelerate, verify the understanding of concepts in ...
1
vote
1answer
162 views

Implicit plot3d in Sage Math

I am currently trying out using the math software Sage. I am currently in a Calculus III class at my university so I was hoping to be able to leverage its 3D graphing capabilities. In one particular ...
1
vote
1answer
54 views

Mathcad doesn't calculate an expresion

could anyone help how to force Mathcad to calculate an expression. After some steps I got such result: http://i.imgur.com/7FtprAI.png but how can I get the result of such expression? Thank you!
3
votes
3answers
208 views

Recommendations for Commutative Algebra Software?

I'd like a software that I can use to work with commutative algebra, specifically to figure out S-Polynomials, Buchberger's Algorithm, etc. I have Mathematica; if anyone could refer me to a package, ...
1
vote
2answers
25 views

Paramertized ellipses

I have $a^2 = (4x-8)^2 + 4y^2$ and $b^2=(4x+8)^2 + 4y^2$ which I switch between every $t=\frac{n\pi}2$ How do I draw this touching the origin, and moving outwards, noting that ...
1
vote
0answers
45 views

Drawing Phase planes with one input, rather than long scripting

What software can be used to draw phase planes easily? I want to input some $\begin{pmatrix}x_1 \\ x_2\end{pmatrix}=$blahblah, and have it plotted with or without initial conditions. Is there any ...
0
votes
1answer
20 views

Converting to Power of Ten Representaion

For very large calculations Wolfram Alpha offers a variety of different representations of the number. One of these is the number written in the form $10^{10^n}$, where $n$ is usually some long ...
0
votes
1answer
64 views

Is there free software that can be used to generate a chain rule tree graph?

I'm in multivariate calculus and we just finished up the chain rule. One of the methods for solving this is to produce a tree graph and traverse it. An example would be this tree graph taken from my ...
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votes
4answers
57 views

Recommendation for free graph plotter that can produce beautiful graphs

Can anyone please recommend a good free graph plotter that I can download. I am looking for a program that can produce neat looking graphs with all the axes, grids and that can plot many different ...
0
votes
2answers
90 views

How I can calculate this number

How I can calculate exactly this number: $$ \frac{(\sqrt{3}+2)^{2^{333111366}}+1}{(2^{333111367}-1)(\sqrt{3}+2)^{2^{333111365}}} $$ Several softwares do not support this number.
6
votes
4answers
216 views

Software, techniques and tricks of experimental mathematics to conjecture possible closed forms

It often happens that people conjecture possible closed forms of integrals, series, and so on starting from a numerical value calculated to very high precision. What are the techniques, tricks, ...