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4answers
208 views

Calculator similar to Desmos but for 3D

Is there a calculator with functionality similar to Desmos but in 3 dimensions? I am looking to learn about families of quadric surfaces so I am looking for a 3D calculator with sliders.
5
votes
2answers
144 views

Computing contractions of ideals in Macaulay2

Does Macaulay2 compute contractions of ideals under ring homomorphisms. Specifically, if $R\subseteq S$ is a ring extension (say polynomial rings over $\mathbb{Q}$ which can be specified in M2) and ...
1
vote
2answers
589 views

Software for Solving Numerically Fractional Differential Equations

I have been trying to find information on how to solve fractional differential equations numerically with the usual maths software (Mathematica, Maple, Matlab..). Or to find an alternative program to ...
0
votes
2answers
56 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?
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2answers
79 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 ...
2
votes
1answer
38 views

How does the base of a group determine the “sort” of the elements in the group

I'm trying to study groups in Mathematica, and I've asked a question on Mathematica.SE that perhaps only someone from Math.SE could answer. Related: How does ...
2
votes
1answer
69 views

Software for Binary Integer Linear Programs

I am aware that there is good software out there to solve integer linear programs (ILPs). However, is there (preferably free or low cost) software I could use to solve large binary integer linear ...
1
vote
1answer
70 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 ...
1
vote
1answer
66 views

Asymptotic bounds. What software to use?

For a pair of expressions ($A,B$), I need to determine whether $A$ is upper asymptotic, tight bound, or lower asymptotic of $B$. For example: $$A = n^{\log(c)}$$ $$B = n^{sin(n)}$$ What (free) ...
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votes
1answer
29 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
1answer
33 views

Programs for Purple Comet Math Meet

I am going to be participating in the high school division of the Purple Comet Math Meet. Since computers are allowed to be used on the competition, I was wondering if anyone can recommend ...
0
votes
1answer
55 views

Is there a program (webbased or not) that allows me to draw freeform on a graph?

I need to draw some graphs for a distance-based course I'm taking where I need to draw graphs that are based on my own estimates, not on a function. All of the websites I'm finding online are based ...
0
votes
1answer
26 views

“Dynamic figures”

Which kind of software allows to do things like this one or that one, for example?
0
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1answer
57 views

Calculate Geometric Series from three things

How can I calculate the gp series from third term,third last term and sum of the series?Is the approach of calculating first term by taking gcd of third term and sum of series correct or not?
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votes
1answer
40 views

Free interactive software for vectors

I'm looking for a free, interactive program that allows me to graphically draw vectors, and at the same time display specified dot products, magnitudes, etc. as I move/resize the vectors. It can be ...
0
votes
1answer
175 views

MathCAD: composite function, (fog)(x)

So sorry for the dumb question, but I can't figure this out and I have been searching for the answer and can't find it... and at this point I no longer know what to Google. Using MathCAD, how do I ...
0
votes
1answer
35 views

calculating the median in iWorks Numbers from a dictionary of values

I need to calculate the median among some numbers which I have in iWorks numbers. Since I have to do this several times (a few hundreds) I really cannot do it by hand. The numbers reach me (from the ...
0
votes
1answer
129 views

Solve 4 A (L^(3/4)) - wL (((24 - L) w)^(-3/4)) = -(((24 - L) w)^(1/4)) for L? Using Mathematica

I'm trying to solve $$4 A (L^{3/4}) - wL (((24 - L) w)^{-3/4}) = -(((24 - L) w)^{1/4})$$ for $L$ using Mathematica, and it spits the following out: ...
0
votes
1answer
62 views

Minitab - Binomial Probabilty results in 0 regardless of input constant

This is my first question here so please be patient if I make a mistake. I will try to correct it. I am using minitab for a statistics class. I have to compute the binomial probability with n=60 and ...
0
votes
1answer
135 views

What computer program can calculate Kemeny-Snell's median?

Unfortunately, I didn't find any computer realization for computing Kemeny-Snell's median.
0
votes
1answer
90 views

Fitting a model in R, Least squares estimates

$ \Bbb E$(grades) = $\bigg(\alpha$, teacher='Female', and, $\bigg( \alpha+\beta $, teacher='Male' given that I have loaded up the required data, how should I go about fitting this model in R? Then ...
-1
votes
1answer
69 views

Is there any software that can replace scratch paper

I am doing a lot of simplification of length equations and wonder if there is any good software/editor that can save me some effort and scratch paper. I don't need the software to calculate, just need ...
1
vote
0answers
90 views

Concerning The 'Price-Collecting Steiner Tree'

I'm a Master student at the University of Leuven, Belgium. I have to make a report of a case concerning the 'Price-Collecting Steiner Tree'. We have our model and our restrictions. We are just looking ...
1
vote
0answers
203 views

Sensitivity analysis on non linear problems

First of all, I would like to apologize if this question does not fit into the "soft" category. I am quite a newbie around here, and maybe I can fail to get the feeling of what exactly is a "soft" ...
1
vote
0answers
84 views

question about B.N.F

for example i have a code of strings which is efzau and 47 how can i define a grammar, set of terminal symbols and set of non terminal using B.N.F? Thanks
0
votes
0answers
41 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 \; ...
0
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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 ...
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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.
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votes
0answers
23 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)) = ...
0
votes
0answers
14 views

Detect distance balance in graph

does exsist any software to detect distance balance in graph? I see gephi I wan't to know can this application do this work? thank you!
0
votes
0answers
36 views

Computer-aided study of elementary geometry

As a beginning student of elementary (euclidean plane) geometry, so far, I have gotten the impression that there are two major approaches to geometries: naive vs axiomatic. Being a humanities student ...
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0answers
19 views
0
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0answers
52 views

AUTO Software for ODE's: references or forums?

I'm learning the AUTO software that does numerical continuation of ODE's by following these two references: The official manual found here www.dam.brown.edu/.../auto07p.pdf Lecture notes found at ...
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0answers
44 views

Geogebra - constructing the smallest circle that contains a triangle

I want to create a Geogebra demonstration of the smallest enclosing circle of a given triangle. The Geogebra tutorial shows how to create the circumcircle of a triangle (by calculating the ...
0
votes
0answers
77 views

How to graph the Riemann zeta function in Grapher.app (Mac application)?

I am interested in graphing the Riemann zeta in the only graphing application on my computer, the Grapher app. I am only interested in graphing $\zeta(x)$ for real $x$, but graphing on the whole ...
0
votes
0answers
63 views

Simple Application to model matrix transformation of basic geometric shapes

I've been searching the internet for a simple, free, application that will allow me to experiment with matrix transformations on a 2D and/or 3D graph of geometric shapes. For example, I'd like to ...
0
votes
0answers
82 views

Are there any modern Symbolic Equation Manipulator that enables drag and drop?

http://sourceforge.net/projects/equation/files/?source=navbar I have always dreamed a piece of software where can you manipulate an equation (or inequality for that matter) by simply dragging and ...
0
votes
0answers
28 views

Bidirectional Function

I'm not a mathematician but a software engineer. I would like to ask you for keywords that I need to google for, links or talks about this concept: We know that a function is something that ...
0
votes
0answers
52 views

What math publications are re-publishable?

If I wanted to make a math theory database, what sources could my users freely take from? What if they re-expressed a theorem in another way?
0
votes
0answers
305 views

Generating an equation from an image I have

I am not exactly sure if this question belongs here but I could not think of a better place to ask. So I recently discovered that various people on the internet have created equations for rather ...
0
votes
0answers
36 views

MATLAB plotting issue

I posted this question on StackOverflow, but did not get any answers, so hopefully this will work better. Is anyone familiar with plotting in the Matlab SISOtool? For some reason, I cannot access the ...
0
votes
0answers
92 views

Can I write a paper about a mathematica operations error?

I found a Mathematica8,9 operations error, a simple but significant error in an iteration method. There may be error propagation involved. FORTRAN90 does not exhibit this phenomenon. Can I write a ...
0
votes
0answers
72 views

Xi function plotter ??

i would like to know what software i need to plot the RIemann Xi function $ \xi(s)= \frac{1}{2}s(s-1)\Gamma (s/2)\zeta (s) $ on a given interval , for example from $ s=0 , s=1000 $ or from $ s=0 , ...
0
votes
0answers
120 views

What mathematic simulation software is better to learn to use for computer science and algorithms?

I'm a security engineer/software developer and a university student. I have the necessity to start to use mathematics software. Right now I need to represent a space of solution of a problem, but I ...