Help with mathematical software like Maple, Mathematica, MATLAB, Wolfram Alpha, Mathcad, Pari/GP ...

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0answers
21 views

Why is Maple not simplifying this expression

This expression should simplify to zero, but Maple won't give me zero: $$ ...
0
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2answers
49 views

Defining a probability density function in R (software), and sampling from it

I'm asked to generate a random sample from a logistic distribution with the PDF, $$f(x)=\frac{e^{-x}}{(1+e^{-x})^2}$$ without using the function rlogis(...) So I ...
1
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0answers
64 views
+50

Runge Kutta 8(5,3)

This is actually three small very related questions about Runge Kutta methods. 1) I have programmed a RK 7(8) method also RK 4(5). At the beginning I was assuming that the RK 7(8) uses two ...
0
votes
1answer
17 views

Mathcad simplify results using cnsg instead of 1

How can I prevent Mathcad from adding csgn to my siplification? Sample: (x-1)/((x-1)^2)1/2 simplify -> csgn(x-1) Image from Mathcad
0
votes
0answers
51 views

Calculations in McLain groups

Is there any program in GAP or other softwares doing calculations in McLain groups and finding subgroups etc. For the McLain groups see Derek Robinson's book: A course in the theory of groups, p347 ...
0
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0answers
24 views

Computer Software for drawing graphs

I want a graph software which helps us to draw graphs. I mean, I don't actually want a software that computes a graph on giving the function (i already have one). It should be just like paint, ...
-2
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1answer
22 views

Is there a document creator that allows for basic entry? [closed]

I am really not sure how to word this... I'm wondering whether there is a program that allows for document writing, and works in a similar way to the Equation Editor in MS Word? (obviously without ...
1
vote
1answer
71 views

Formula rewriting software

I would like to have a program that rewrites formula's for me. What I would like a software where I can imput some formulas, constraints, and so on, and then the program outputs the formulas that ...
1
vote
1answer
50 views

What software and hardware can you use to write math and take notes?

I'm trying to basically replace paper. I want to be able to write things and draw things out as easily as I can on paper. I bought the Wacom Intuos tablet on Amazon but ended up returning because it ...
1
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0answers
10 views

Time series library in Java

I'm looking for a library to do some time series analysis in Java but I can't find anything suitable. I've found plenty of libraries such as Math3 of JSAT but there's much I can you for my problem. As ...
6
votes
2answers
141 views

Software or tool for investigating groups

I'm interested in software that has the ability to investigate finite groups. In particular, I'd like to be able to ask it questions like "What are the solutions to $x^3 = 1$?" (i.e. find cube roots ...
1
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0answers
45 views

What kind of structures can I count using Alg?

I'm interested in counting structures that satisfy certain constraints up to isomorphism. For example, I might want to know how many clutters there are on $n$ vertices. The only way I can think to ...
1
vote
1answer
41 views

Programming PARI/GP to do a sum

I'm trying to compute the following sum in PARI/GP $C=\sum_{n=1}^{\infty} \frac{g(n)}{n^2}$ where $g(n)$ defined as $$g(n)=(-1)^r, \qquad r=\text{number of even indexed prime factors of $n$}$$ By ...
3
votes
0answers
54 views

Program for writing a Bachelor Thesis. [closed]

Hello Im prolly going to start writing my bachelor thesis really soon (on geometric ergodicidy). It will obviously contain lots of mathematical formulas and symbols. Does anyone know a really good ...
1
vote
1answer
64 views

Implementing a function in PARI/GP

I want to define a function: $$g(n)= \begin{cases} +1 & \text{if $n=1$},\\ +1 & \text{if $n$ is an odd indexed prime}, \\ -1 & \text{if $n$ is an even indexed prime},\\ (-1)^r & ...
0
votes
1answer
31 views

How to represent R function dexp mathematically?

I need help representing this line of code mathematically. exp(sum(dexp(x,prop_theta,log=TRUE)) - sum(dexp(x,cur_theta,log=TRUE))) Thanks for your help in ...
0
votes
0answers
48 views

Can a Computer Algebra System 'experiment' with expressions?

I have recently been reading about software for symbolic manipulation, and I can see its use as a tool for performing large calculations that would be unfeasible otherwise. Given that these systems ...
0
votes
0answers
30 views

Tool for differentiating a matrix and solving a matrix equation (in closed-form)?

Is there any software or online tool that can analytically solve a complex matrix equation, such as the following one in closed form (not numerically)? $$\frac{\partial \; ...
1
vote
0answers
52 views

Any complex analysis book with programming assignment and exercises?

All: I had studied complex analysis long time ago. Now, I would like to review some material, particularly about Analytic function, Riemann zeta and Analytic function. I have been a software ...
4
votes
0answers
87 views

Any abstract algebra book with programming (homework) assignment?

All: I had studied abstract algebra long time ago. Now, I would like to review some material, particularly about Galois theory (and its application). Can anyone recommend an abstract algebra book ...
3
votes
2answers
106 views
1
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2answers
64 views

Free solvers in C/C++ for convex integer programming

I need to solve the following integer program: $\text{minimize } \sum_{i=1}^n(a_{i0} x_i + \sum_{k=1}^3 a_{ik}w_i^k + \sum_{j=1}^m d_{ij}y_{ij})$ $\text{subject to}$ $$ \sum_{i=1}^n y_{ij}=1, \quad ...
0
votes
0answers
33 views

Subject to in equation

I have the formula below: $$\hat x_2=\arg\min\lVert x\rVert_2\quad\text{subject to}\quad A{x}=y.$$ But I didn't understand what was meant by "subject to" ? does $x$ is replaced by $x_2$? please can ...
1
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1answer
57 views

Software to easily draw 3d plots from functions

my problem is that I need a way to quickly check results of my, that is to say, homework. I think that the best way to do this is to draw a plot of a function to quickly see whether my solution is ...
2
votes
1answer
63 views

Possibilities of calculate the determinant of an $168\times168$ matrix

Sincerely I've zero knowledge of this kind of math, but I've recently come to work in a friend's project to calculate a matrix of this size. This friend of mine has tried to do this with excel, with ...
1
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1answer
81 views

total number of combinations?

Patient Age ---> Avg Visits / Year <1 year ---> 7.5 1-4 years ---> 3.0 5-14 years ---> 1.8 15-24 years ---> 1.7 25-44 years ...
0
votes
0answers
38 views

How to reduce a graph via decomposition?

Is there a Java / C# library that can be used to reduce a graph via decomposition? Or could someone point me to a good tutorial where I can learn all these? E.g.
1
vote
1answer
45 views

What's the best software for primality tests of huge numbers? (check if an integer is prime or not)

I just read an article about huge prime numbers (some with more than 10millions digits!) that are discovered using software that check if an integer is prime or not (primality test sofwares). What is ...
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votes
3answers
28 views

point on a line and distance from a point [closed]

I have point(x1,y1) and point(x2,y2) these are end point of line and point(m,n) is a point. How can i find Point(a,b) which lies on the line ,that is the shortest path from point(m,n) to the line
0
votes
1answer
38 views

Solve a system of equations.

I have a system of equations: \begin{align} & x_{21} (\frac{\partial}{\partial x_{11}}f_{1111})( x_{11} , x_{21}, y_{11} , y_{21} ) + \frac{y_{21}}{x_{11}^2} (\frac{\partial}{\partial ...
0
votes
1answer
41 views

Aleks buttons that aren't needed? [closed]

I'm solving a problem on it, and to the side it gives me the button for fraction formatting. The buttons it gives are different for each problem. Does the fact the it's there mean that the answer has ...
2
votes
1answer
115 views

The J programming language: is it useful for mathematics?

I just stumbled upon the J programming language, which has the description: J is particularly strong in the mathematical, statistical, and logical analysis of data. It is a powerful tool in ...
1
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3answers
60 views

Creating fractals through computers

What are some beginner softwares for creating fractals on computers?
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0answers
17 views

Draw and compare the likelihood using R

The following shows the heart rate (in beats/minute) of a person, measured throughout the day: 73, 75, 84, 76, 93, 79, 85, 80, 76, 78, 80. Assume the data are an iid sample from ...
2
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5answers
716 views

What should I use Latex or Microsoft Word Professional? [closed]

What should I use Latex or Microsoft Word Professional for writing mathematics papers and documents and notes and courses...?
4
votes
1answer
58 views

Computer Algebra Systems for Experimental Mathematics (especially Integer Relations with PSLQ)

I would like to use a computer algebra system to do some experimental mathematics, particularly Integer Relation problems using the PSLQ algorithm. I know that Maple has a PSLQ implementation, but ...
84
votes
5answers
10k 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: ...
1
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0answers
42 views

Writing math for pc and ipad

I have searched many times on softwares and apps for pc and ipad that are suitable for writing math up to advanced level, and support all mathematical scripts, symbols, formulas and operators. Can you ...
0
votes
2answers
58 views

Looking for a function calculator

I am looking for a calculator which can calculate functions like $f(x) = x+2$ at $x=a$ etc; but I am unable to do so. Can you recommend any online calculator?
5
votes
0answers
61 views

Tool that draws Venn diagram from subset relation

Is there a tool (LaTeX, JavaScript, Mathematica..) that allows one to draw Venn diagram automatically from subsets relations, e.g. $$A\subset A+B$$ $$A\subset C$$ $$C\subset C+D$$ $$B \not\subset ...
1
vote
1answer
30 views

Is there some function in Maple which can compute the number of monomials in a polynomial?

Is there some function $f$ in Maple which can compute the number of monomials in a polynomial? For example, $f(x_{1,2})=1, f(x_{1,2}+3x_{3,2}x_{2,5})=2$. Thank you very much.
1
vote
2answers
38 views

How to find number of variables in a monomial in Maple?

Given a monomial $m$. How to find number of variables in $m$ in Maple? For example, let $m=2*x*x$. Then the output to be $2$ (two same variable $x$ in $m$). Let $m=-2*x*y*y$. The output is $3$ ...
1
vote
2answers
59 views

Does anyone know of any open source software for drawing/calculating the area of intersection of different shapes?

I would like to be able to draw any number of different shapes and determine the area of their intersections. I'm looking for free, open source software. I thought about trying to code something up ...
0
votes
1answer
25 views

Take the index of a variable in Maple.

Are there some functions in Maple which can take the index of a variable. For example, we define are there some functions f in Maple such that f(x[2,3]) = [2,3]? Thank you very much.
3
votes
3answers
147 views

Do all mathematical symbols in LaTeX have a meaning?

I debated whether I should post this on the TeX forum or here. Mathematics seemed more appropriate. LaTeX has a ridiculous amount of symbols, including countless variations of the integral sign and ...
0
votes
2answers
114 views

software to solve system of nonlinear equations

I am looking for a software to solve system of nonlinear equations. It would be great if the software can satisfy the following requirements It can support symbolic computation. It deals well with ...
1
vote
0answers
55 views

Interactive Equation editor with Latex syntax

I was using the built in equation editor used by Pearson's "MyLab and Mastering" physics course, and I really like how it's both interactive and uses Latex syntax to insert equation elements. ...
3
votes
1answer
41 views

How to evaluate the quotient of Dedekind eta function in Pari/Gp

This expression I found in some research paper, which connects quotient of Dedekind eta function and ray class field of conductor N, which in turn gives the value of j-invariants. For $K=\mathbb ...
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0answers
9 views

Evaluating the quotient of Dedekind Eta function [duplicate]

This expression I found in some research paper, which connects quotient of Dedekind eta function and ray class field of conductor N, which in turn gives the value of j-invariants. For $K=\mathbb ...
0
votes
0answers
24 views

calculation of an integral via PARI/GP

I just started to use PARI/GP and I have a question that's been so strange to me. Here are the codes: intnum(x=1,2,frac(x)) = 0.50000... intnum(x=2,3,frac(x)) = 0.50000... intnum(x=1,3,frac(x)) = ...