For help with mathematical questions arising from software such as Maple, MATLAB, Mathcad, Pari/GP, R, and so on. Consider posting questions about Mathematica and WolframAlpha onto Mathematica StackExchange instead. For GAP, SAGE, and MAGMA, use computer-algebra-systems.

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7
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1answer
154 views

How to properly use technology for back-of-the-envelope calculations?

I'm usually quite eager on using technology wherever sensibly applicable, however whenever I make some calculations I still end up using a pen and paper, by now resulting in an entire pile of sheets ...
1
vote
1answer
115 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
90 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. ...
1
vote
1answer
72 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) ...
0
votes
1answer
25 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.
0
votes
1answer
29 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 ...
0
votes
1answer
31 views

Where can I find a binary calculator that can do exponentiations, roots and logarithms?

I've searched on Google, but all I found was binary calculators that can do additions, subtractions, multiplications and divisions, nothing else.
0
votes
1answer
53 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
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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
66 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
27 views

“Dynamic figures”

Which kind of software allows to do things like this one or that one, for example?
0
votes
1answer
59 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?
0
votes
1answer
44 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
259 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
49 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
207 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
82 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 ...
1
vote
0answers
42 views

Question about Maxima

We want to sum up a polynomial WeylNumer(m+n-2*i,2*i+2*k+1-2*j)) for i from 0 to m, for j from 0 to n. What does "map(x->sum(sum(x,j,0,k),i,0,m),WeylNumer(m+n-2*i,2*i+2*k+1-2*j));" mean in Maxima? ...
1
vote
0answers
251 views

App to Read DOCX in iPad with Mathematical formulae?

I use screenshots from Math SE to add math -formulae to my DOCX -file but it is irritating when other people do not realize that my programs cannot read mathematical formulae in DOCX -format. I tried ...
1
vote
0answers
134 views

Computer Algebra System for probability theory

Is there literally any [ preferably free ] Computer Algebra System that would handle probability theory directly? As for now I am mainly interested in calculating marginal densities out of ...
1
vote
0answers
212 views

Programmer understanding academic writings on maths

I would like to know in which order I should learn different areas of maths so I can have a robust overview of all the theory in case I need something for a computer programming problem. So I've ...
1
vote
0answers
92 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
222 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
204 views

Coq transparency issues with type class fields

I am having some issues with, I suspect, transparency of fields in type classes. Consider a type class such as ...
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
9 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 ...
0
votes
0answers
23 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 ...
0
votes
0answers
22 views

The best advanced maths library in java

Math class in java is fine for small and basic mathematical operations like ; Math.random(); But is there any library from which i solve more complex ...
0
votes
0answers
36 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:
0
votes
0answers
7 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 ...
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votes
0answers
5 views

Statics of a Rigid Body

The I-beam A-B shown below is supported by a cable at B and a pin at A. The cable is inclined at an angle, θ = 23° to the longitudinal axis of the beam. The beam supports a load, m, of 8 kN at a ...
0
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0answers
41 views

Modified Lucas-Lehmer Test

Conjecture (Modified LL) Let $M_p=2^p-1$ such that $p$ is odd prime and $p\equiv 5 \pmod{6}$ . Let $S_i=S_{i-1}^8-8\cdot S_{i-1}^6+20\cdot S_{i-1}^4-16 \cdot S_{i-1}^2+2$ with $S_0=4$ , then $M_p$ ...
0
votes
0answers
58 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
votes
0answers
54 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
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0answers
32 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
votes
0answers
37 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 ...
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.
0
votes
0answers
34 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
22 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
44 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
20 views
0
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0answers
54 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 ...
0
votes
0answers
67 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
110 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
76 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
409 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
37 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
96 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
74 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
122 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 ...