2
votes
3answers
353 views

Is there a way to do conditional matrix loop using 'continue'

I have the following: ...
2
votes
0answers
303 views

Fourier Coefficients in Mathematica [duplicate]

I'm calculating Fourier Coefficients by hand and trying to verify them in Mathematica. However, in Mathematica I get them wrong by a factor of 2. Is there some part of the Mathematica functions I'm ...
2
votes
2answers
768 views

About generating power series

For an arbitrary function $f(x,y)$ I am defining functions LogMT1 and LogMT2 as follows, ...
2
votes
5answers
414 views

How to leave function unevaluated programmatically?

Is it possible to write a function in such manner, that it can be either evaluated or left unevaluated? This is a general question. Sample below is just a sample. No need to find solution for this ...
2
votes
2answers
298 views

local variable naming & symbolic argument

I'm stuck here with my variable assignment in this scenario ...
2
votes
1answer
444 views

Plugging values into functions

I am very new to Mathematica, and need to know how to plug values into existing functions. For example, Math World supplies the following code for building a truth table of ...
2
votes
2answers
102 views
2
votes
1answer
138 views

Randomizing a lab

I teach a class where students do a weekly lab in Mathematica. They do it in a computer lab, and because there are many of them, and only one of me, I encourage them to help one another. ...
2
votes
1answer
236 views

Clearing distributed definitions from remote kernels

The documentation shows the following example to "Remove a distributed definition..." Oh, course this doesn't work without redefining the function prior to re distributing the definition. The ...
2
votes
1answer
729 views

NDSolve runs out of memory

I need to solve a second order ODE numerically. The ODE depends on two parameters (a,b). Things work fine when 'a' is small, but for large 'a' the solutions are oscillating rapidly and Mathematica ...
2
votes
1answer
756 views

'not a valid variable' error when trying to solve 13 equations with 13 variables

I want to solve 13 variables by 13 equations. And here is my program: ...
2
votes
3answers
379 views

Maximum tuple value

Is there a simple way to make a maximum tuple value (similar to python)? For example, in python max([ (1,2), (1,3), (3,1), (4,0) ]) returns ...
2
votes
1answer
638 views

Linear Solve with Modular Arithmetic

I am interested in using LinearSolve[m,b] which will find a solution to the equation $m.x=b$, where I am in mod 2 arithmetic. Is there any way to perform this ...
2
votes
1answer
213 views

Numerical comparisons of matrices

I have a matrix which should be equal to a null matrix. However due to the numerical precision, a brutal equality test with a matrix initialized with zeros does not work. How should I perform the ...
2
votes
1answer
963 views

Union and Intersection of intervals

I have two sets $A = \{1 \leq x \leq 5\}$ and $B = \{5 \leq x \leq 8\}$. Now I want to find the Union and Intersection of $A$ ...
2
votes
0answers
201 views

Changing scroll rate for page down key?

I have a presentation remote that allows me to advance Mathematica slides when in the SlideShow environment. The control sends a page down key. Some of my slides extend below the screen window, and ...
2
votes
1answer
572 views

FindRoot Infinite expression 1/0 encountered error

I have 1 equation in 1 variable, which when I use Plot, looks like this: ...
2
votes
2answers
111 views

How to pad Background size in Style calls

When highlighting text using Style and Background, as in ...
2
votes
2answers
546 views

Annotating plots with plain (not italicized) mathematical text

I have a plot and I would like to annotate some mathematical text in it. Initially, Mathematica puts it in italics by using Drawing tools palette, but I want it all in plain text. How can I do it? ...
2
votes
1answer
138 views

Can't run 2 CDF documents at a time on a Windows computer

I've rolled out a few CDF's to end users. See earlier posts: suppress message and which player platform. Now, an end user reports that they can't open more than one CDF document at a time. The ...
2
votes
1answer
613 views

Solution of numerical vector equation

Suppose I have a vector equation: Y'[t]==rhs[Y[t]] and Y[0]==ConstantArray[0,n] where "rhs[Y[t]]" is a black box function ...
2
votes
2answers
208 views

MapThread to Spheres with various colours

I have these two lists ...
2
votes
1answer
283 views

Table with dependent iterator

I'm trying to build a table where the iterator is based off of the ith-1 entry in the table. In other words, the value at i is based on a function with i-1 as its input. EXAMPLE: Let's assume we're ...
2
votes
1answer
363 views

Laplacian or Grad of an InterpolatingFunction

For obtaining a Schlieren image from an equation for density, I need to calculate the first derivative of density and make a contour plot. The below code snippet calculates the first derivative w.r.t ...
2
votes
1answer
451 views

Inconsistent initial and boundary conditions

I have a 4th order nonlinear PDE with the following BCs and IC: ...
2
votes
1answer
305 views

Borked Find Window in OS X

I've been having this happen to me on a daily basis with the Find & Replace window on OS X: No text can be typed into the red regions, so all find & replace functionality is gone when this ...
2
votes
1answer
421 views

Exporting Animations under Duration constraints to view on an iPad

I would like to show some eye-movements datas as animation on an iPad. That is to see the gazes as they occured as a function of time. Ideally We would only see the Graphics objects, not the ...
2
votes
3answers
634 views

Problem with Union and Intersection

Consider the following: list={{a,b,c},{c,d,e},{d,e,f},...{x_,y_,z_}}; I would like to apply Union on the elements of the list ...
2
votes
2answers
449 views

Cannot evaluate differential in Mathematica

I have a small toy script in Mathematica that I am trying to use to evaluate the pdf of $Y$ where $Y=X^2$, and $X$ is uniformly distributed in $[0,a]$. The script is, ...
2
votes
1answer
190 views

Delete a style type from stylesheet

I have created a new stylesheet but now I'd like to delete a style type, for example "program" from it. How can I do it ?
2
votes
2answers
490 views

How to impose custom style to the edges of a graph

We construct a graph as the following. ...
2
votes
1answer
3k views

Visual Studio Express 2010 on x86-64: libcmt.lib missing

The CCompilerDriver documentation explains that to use visual studio express on 64-bit targets, it's necessary to install the windows SDK after installing visual studio. I have done this, first ...
1
vote
1answer
92 views

No legends in parametric plot

plotting some descibing functions, I wondered why I don't get any legends in my plot. The describing functions (and options): ...
1
vote
1answer
58 views

Computing a Sequence using Recurrence

I posted a similar question earlier today, but unfortunately I realized after several hours that I over-simplified the problem for this forum. There is a very good answer to the Computing a sequence ...
1
vote
1answer
107 views

Table shifting bug?

I use Mathematica for calculation of coordinates in format {x[t], y[t]}. For this purpose, I wrote Module T...
1
vote
1answer
74 views

Two dimensional high oscillated numerical integral

I have some problem with two dimensional integral. I want to calculate such integral. ...
1
vote
0answers
65 views

What are the differences between these functions when used for NMaximize?

In short, the question is how to construct the function you want to optimize? ...
1
vote
1answer
21 views

How to share `ChartLegends` among multiple `BoxWhiskerChart`s in `GraphicsGrid`?

First, create two BoxWhiskerChart: box1 and box2 ...
1
vote
1answer
67 views

Ratio of variables AxesLabel is messed up when plot exported to pdf

On the vertical axis of a Plot whenever I have a ratio of variables in a string as axes label, the exporting of the plot to PDF format messes this ratio up. Minimal working example: ...
1
vote
0answers
45 views

Help with Multivariate ProbabilityDistribution

I wish to obtain numbers from ...
1
vote
1answer
51 views

numerical integration question

The actual expressions is quite complicated so I will use a trivial example. Let In[36]:= f[u_] := 1/3 - (5/18)*(Cos[u]*a[1] + Sin[u]*b[1])^2 Then ...
1
vote
2answers
109 views

Increasing number of decimal places with FixedPoint

I've tried: In[169]:= newton3[x_] := N[1/2 (x + 3/x)]; FixedPointList[newton3, 1.0] Out[170]= {1., 2., 1.75, 1.73214, 1.73205, 1.73205, 1.73205} Of course: ...
1
vote
1answer
94 views

strictly positive solution to $Ax=b$

How to find in mathematica one real strictly positive solution, if any, of $Ax=b$. A is rectangular matrix. Thanks
1
vote
1answer
56 views

How to get the content size (in pixels) of the output in an output cell?

How to get the content size (in pixels, width and height) of the output in an output cell?
1
vote
2answers
43 views

Subpartitioning elements of a list based on some h[ri] == h[rj] test

If we have a list of elements: list = {r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12}; I'd like to further partition the elements into sets where, for some ...
1
vote
2answers
73 views

Insert at specific resulting positions?

I have an initial list: list0 = {1,2,3,4,5}; and I want to insert {a,x} at specific positions ...
1
vote
2answers
99 views

Labeling Manipulate variables with their values? [closed]

I want use Manipulate to create an adjustable plot with labeled values. This Manipulate expression seems to work fine: ...
1
vote
1answer
144 views

Greek letters do not export correctly

Here is a simple plot P0 = Plot[x, {x, -7, 7}, Frame -> True, FrameLabel -> {"Ω", "Y"}] Then I want to export as .pdf it using ...
1
vote
2answers
66 views

Nested OpenerView controls not aligned

This question is related to a previous question of mine, Expand and collapse rows in a grid I'm trying to have nested OpenerViews similarly to the answer of kguler, but they are not aligned. The ...
1
vote
1answer
71 views

How to extract contour functions from contour plot [duplicate]

I would like to extract the functions that describe the contours of a contour plot. For example, if I have the function: ...

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