2
votes
2answers
79 views

Automatically highlight certain cells

I am looking for a method to highlight certain cells in a table/Grid based on meeting some user defined conditions. As an example: ...
0
votes
1answer
46 views

How to efficiently distinguish the rewired edges in WattsStrogatzGraphDistribution?

The WattsStrogatzGraphDistribution function is a way to construct random graphs based on Watts and Strogatz small world model. The ...
1
vote
2answers
58 views

Unintentional function memoisation via Dynamic

I needed to display edge labels of a graph in a way that allows the edge labels to be moved. ...
0
votes
1answer
36 views

Easy NMinimize does not converge

I try to minimize the following for a>0: f[a_] := Gamma[3]*a^(-3)*(Integrate[Exp[-u]*(u - a)*1/u, {u, a, Infinity}])^(-1) I put in ...
0
votes
0answers
14 views

I have problem with Trigonometry [migrated]

Tomorrow I have a test and there is one exercise in my textbook that isn't explained. Here is the exercise. ...
0
votes
0answers
27 views

How to save all data in all variables in context different than “global”?

I have seen questions on saving data on "global" context. Now if I set my notebook's evaluation context "unique to this notebook". the global context doesn't work quite well. Any idea what should i do ...
1
vote
3answers
74 views

Initialize table in a Module but Break if criteria not met

I am initializing a table inside a function as follows: f[a1_, a2_, a3_] := Module[{RM = Table[a1+a2+a3+i1, {i1, 1, 10}]}, Plus@@RM] I am calling the function ...
-1
votes
0answers
37 views

max K-coverage problem in mathematica [closed]

Is it possible to get a max K-coverage problem solution(s) and/or number of possible solutions in Mathematica? Additionally ...When items of subset to be must cover is given Its NP-Hard problem, but ...
0
votes
0answers
35 views

Why isn't Mathematica plotting my differential equations? [closed]

So here are my equations eqns = {x'[t] == a*y[t] - b*x[t] + g, y'[t] == c*x[t] - d*y[t] + m, x[0] == 60937, y[0] == 13797}; Then I solved it with ...
1
vote
0answers
47 views

Summing a trig series

I am trying to sum the following expression: (Cos[(2 π m)/N]^2 Cos[(2 π n)/ N])/(2 (Cos[(2 m π)/N] - Cos[(2 n π)/N])) from ...
1
vote
1answer
40 views

expression contained across multiple cells

Is it possible to span one expression across multiple cells? E.g. long if statement or function evaluation. I looked in documentation and searched forum/google and could not find.
4
votes
1answer
85 views

Resume/continue interrupted evaluation

I interrupted an evaluation to quickly do something else. How do I resume the interrupted evaluation? I cannot open the "Interrupt evaluation" window, as it is disabled. There is no "Resume" button to ...
0
votes
0answers
31 views

How to make an equation to fit measured data [closed]

I want to make an equation based on my measurements and I have no idea where to start from. I have measured 3 parameters(x1,x2,x3) and calculated the 4th(y). How can I make an equation that can ...
3
votes
4answers
120 views

Randomly selecting and reinserting a subset of elements in a list

This question is similar to my other question: How do I randomly select 'k' positions in a list and shuffle their respective elements without effecting the other elements? Imagine first a ...
2
votes
1answer
76 views

How do I constrain movement for lists of Locators using 2nd argument of Dynamic?

I need to display edge labels of a graph in a way that allows the edge labels to be moved. Locator seems the simplest and most obvious function to use. My ...
0
votes
0answers
48 views

How to solve Stokes equations with non-vanishing boundary condition on two spheres? [closed]

I want to solve the Stokes equations for two spherical bodies (some distance apart) with prescribed velocity on their surfaces, in an otherwise static fluid ($\mu$ and $p$ are constants) $$ \left\{ ...
0
votes
1answer
26 views

Open a pre-existing CDF file from a stand-alone CDF file

This is related to my previous question here A series of my questions are related to an important problem: It is important to be able to CDF-publish a document, and be able to open a separate ...
0
votes
0answers
35 views

Deciding lambda and integrate a function [closed]

I want to decide lambda for this function I also want to integrate the same function. Please help!
0
votes
0answers
48 views

Equation in implicit form

This is simple example: v = {1.48622576, 1.53444276, 1.42299438} v/(v + 1) Out[1]:= {0.597784, 0.605436, 0.587288} In the above case expression v/(v + 1) is ...
0
votes
0answers
23 views

What is the function derivative [closed]

What is the function derivative? f'(x)=? what is the way to the answer?
1
vote
1answer
28 views

How to set the values into some variables from different lists [closed]

I have a list of Values and a list of variables. I want to set the Values into Variables. Assume the following code: ...
0
votes
0answers
20 views

Mathematica program for PLUR decomposition of a symbolic matrix using full pivoting

I wanted to ask if there is a Mathematica program for PLUR decomposition of a symbolic matrix M, such that M = P*L*U*R, using FULL (row and column) pivoting, and where R = reduced row echelon form of ...
4
votes
1answer
108 views

How do I randomly select 'k' positions in a list and shuffle their respective elements without effecting the other elements?

Imagine I have some list: listA = {"a","b","c","d","e","f","g","h","i","j"}; I'd like to randomly select k positions in the ...
0
votes
0answers
42 views

Computing residues of matrix valued functions symbolically

I have a somewhat specific application in mind, but I've run into this kind of problem a few times and never found an elegant solution. Is there an efficient way to get Mathematica to recognize that ...
0
votes
0answers
46 views

NDSolve: Couple ODE and PDE

I am trying to numerically solve an equation with NDSolve, where there is a ODE coupled to a PDE, like the following: ...
5
votes
2answers
386 views

I want to get a special curve in a picture

I have a picture,and I want to get a special curve in this picture ,than draw the line in a new picture.inbut I can't do this . Like this: The picture is this Anybody have an idea?
1
vote
1answer
56 views

Partitioning a list and gathering statistics on the distribution of values across partitions

I have a one-dimensional array of 200 elements consisting of the numbers 0, 1, 2. This array needs to be divided into 10 groups (20 items each). Then, for each group, I want to count how many of the ...
0
votes
1answer
72 views

How to work with Interpolating Function?

I'm starting using Mathematica. I have two coupled differential equations and after using NDSolve the output is in the form of a Interpolating Function. I want to Plot the square modulus of one of the ...
1
vote
0answers
24 views

Ordering the Terms in an Expression [duplicate]

Why does Mathematica almost always put subtractions as the first term in a summation (as a negative summed with the rest)? How do I circumvent this feature so that every occurrence of "-" follows ...
1
vote
1answer
39 views

Formatting All Appropriate Output as Desired Automatically

I want to output in MatrixForm whenever I have a list/vector/matrix, but I do not want to have to type out the command each time. How can I write one command at ...
2
votes
1answer
88 views

DynamicModule with Plots and EventHandler

I am making a little animation in Mathematica, along the lines of some of the Wolfram demo projects. I'd like to animate a simulated trajectory of a random process (say a Poisson process), and while ...
1
vote
0answers
47 views

ParallelTable, ParallelDo and ParallelMap all fail on simple evaluations, a BUG? [closed]

Sorry I am relatively new to the parallel functionality mathematica.. Here is to code: ...
0
votes
0answers
30 views

Mathematica 9.01 and CUDA under VB 2013 and modified CCompilerDriver

I tried to force CUDA using Visual Studio 2013 C compiler by manipulating the VisualStudioCOmpiler file found at C:\Program Files\Wolfram Research\Mathematica\9.0\AddOns\Applications\CCompilerDriver ...
3
votes
2answers
83 views

Need to create a function to generate all permutations of Range[$n$] [duplicate]

Basically I need a function that takes a list and gives all the possible permutations of it. The reason I can't use Permutations is that I have to apply another ...
2
votes
1answer
30 views

Results of ArgMax as a function of a parameter with InterpolatingFunctions

I would like to obtain a function and its derivatives, where the function is defined as the solution to a maximization problem. The obvious approach ...
0
votes
0answers
48 views

Read in bezier curve from svg file

I am trying to do some calculation of some svg file,After read in with Import["filename","XML"]and some easy operation, I can get the string of the bezier curve, ...
3
votes
4answers
245 views

Find the longest constant sublist

Given a list list = {1,2,2,2,2,5,1,3,2,6,6,6,6,6,6,6,6,6,6,6,10,-3}; how to find the longest constant sublist (or equivalently the element and the number of ...
4
votes
2answers
200 views

How can I calculate the limit without using the L'Hopital's rule

I need to prove this limit without using the L'Hopital's rule: $$\lim_{x\to 0} \frac{(1+a\,x)^{1/4} - (1+b\,x)^{1/4}}{x} = \frac{a-b}{4}$$ How can I do it in Mathematica?
3
votes
2answers
450 views

Why are my recursive functions running so slowly? And how do I fix them?

I am working with making numerical solvers for a modeling class I am in, and I want to use the internal recursion handling that is built into mathematcia, but there seems to be a problem. NDSolve ...
0
votes
1answer
77 views

combining plots [closed]

I've made the following plot ...
0
votes
0answers
39 views

Defining a function in Mathematica [closed]

Get the list oddthree of numbers between 100 and 2000 which are the product of three distinct odd primes. Hint: use a Select your condition should be a combination of ...
0
votes
0answers
76 views

PDF files generated by Mathematica on Windows cannot be viewed on Ubuntu [closed]

I have used Mathematica in order to achieve verify solutions of some ODEs on Windows and generated PDF files out of notebooks. After I switched to Ubuntu 12.04.3 I noticed that the PDF files were ...
1
vote
1answer
57 views

Same Mathematica 9.1 Student License on both Ubuntu and Windows 7 [closed]

Is it possible to install Mathematica 9.1 on both Ubuntu 12.04.3 LTS and Windows 7 Home Premium on the same machine. I want to be able to use Mathematica on Ubuntu since I wrote some numerical codes ...
2
votes
1answer
75 views

MathLink c++ passing lists of real values simple example

So this may come down to me not being a very competent programmer but I am struggling with passing list from Mathematica via MathLink that aren't of integers. The final code I am hoping to get out of ...
0
votes
1answer
42 views

Solving a system of equations where two variables can only be one of several discrete values

I want to solve a three-equation system, but I need to constrain two of the variables so that they can only take one of several discrete values that I would specify (this is a circuit design problem ...
4
votes
2answers
93 views

Counting the number of instances of one sub-string within a given string within a lower- and upper-bound gap of a second sub-string

Please consider the situation where I give you a list where entries are drawn from a fixed set of characters: ...
1
vote
1answer
151 views

Compile with array operations

When I use the function f with only the Module ...
0
votes
1answer
79 views

How to produce functions [closed]

I want to produce n functions. For example, assume that by giving n=3, 3 definite integrals will be created, like the following: ...
0
votes
0answers
24 views

Minimize solution to linear system with singular system matrix

I am trying to solve a time-dependent linear system with a singular system matrix, $A$, thus an infinite number of solutions, ${\bf x}$(t), exist that satisfy the linear system. The solution I am ...
3
votes
0answers
37 views

Machine precision infinity

Is it possible to obtain the machine precision (double) version of Infinity? This is useful when using LibraryLink and C ...

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