# All Questions

143 views

### Problem with numeric integration

I am having trouble with the UnitStep function as in the title. My problem is very simple, but I am not able to get a numerical result. I have ...
145 views

### Why is there a limit of 15 different instruments to be played simultaneously, with Sound / SoundNote?

It seems to be impossible to play more than 15 different instruments simultaneously with the Sound[{Soundnote[...],...}] construct. Any guesses why it is so? With ...
515 views

### How can I control the number format of exported data?

I'm having issues while exporting a tables of numerical values to "*.dat" data files. Here's the thing, sometimes when I export a table, I get more decimals on some random values. The problem is that ...
1k views

### Module with “local functions”

I am trying to use a Module having "local functions", i.e., those which I need to define only inside this module. So I tried this: ...
1k views

### Eigenvalues and Determinant of a large matrix

Can anybody kindly explain to me what is going wrong regarding a simple problem I have? I can find the eigenvalues of a large matrix using Eigenvalues[], but when I ...
100 views

### Attaching the same message to several symbols

It is common in many packages, as well as system symbols, that the same message can be issued by several functions. Here's an example: One mechanism that can be used for this is to define the ...
547 views

### Saving table of plots into a single figure within a pdf file

I have following code: ...
187 views

### How can I change the default output number form to accounting form?

By default, large numbers are displayed in scientific form in output like 1.2345 x 10^8 in Mathematica 8.0.4, but I would prefer having numbers in accounting form ...
296 views

619 views

### How to change the density range in DensityPlot?

This is an example from Mathematic Help, DensityPlot[Sin[x] Sin[y], {x, -4, 4}, {y, -3, 3}, ColorFunction -> "SunsetColors", PlotLegends -> Automatic] ...
117 views

### How to change the output format of a built-in function

Is it possible to change the output of build-in functions? I would like to change the output for IdentityMatrix[n] to "I", so I tried ...
486 views

### Is it possible to select outliers on a graph and determine the index of the outliers?

I have a large data set of experimental data for which I have determined a theoretical fit. However, for some of the experimental data I took, there was systematic error, leading to the data deviating ...
325 views

### Solve equation with inequalities for parameters

I want to solve following equation: ...
282 views

### How to draw Graphics3D items with straight border lines?

I want to make a Polygon with straight border lines. For that purpose I wrote the following code, but it doesn't show straight borders. ...
132 views

### Problem with plot of discontinuous function of 2 variables and adding legend to a contourplot

I have 2 problems with which I would need help: -first one is that I would like to plot a discontinuous function of 2 variables but can't succeed (see attachment) -then I also would like to display ...
130 views

### TabView resets to default when selecting data using Control object

I have 3 drop down boxes on one of the tabs in my TabView. Two of the drop down boxes results are used in a Select statement to ...