# All Questions

150 views

### DSolve problem with system of linear ODEs

I encounter a rather strange problem in Mathematica when trying to solve the following system of linear differential equations: ...
346 views

### A symbol occurs in more than one context:one of the definitions is shadowed

I started Mathematica 10 and run as the tutorial says: trainingset = {1 -> "A", 2 -> "A", 3.5 -> "B", 4 -> "B"}; c = Classify[trainingset] but the ...
57 views

### Question about the matrix operation [duplicate]

I was wondering if there is an automatic way to do this kind of matrix operation. For example, for a given matrix ...
226 views

### Problem with NDSolve in Mathematica 9 / 10

I'm having trouble by solving the following differential equation in Mathematica 9 and 10, where the code works fine in version 7: ...
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### double-backslash-file path problem@version 10.0 [duplicate]

I found this happen @ Mathematica 10 pre test version and formal English version. Copy a file from windows, then paste into FrontEnd cell, you'll get a path, such like ...
132 views

### how do I plot this surfaces in 2-D?

Let $x_1$ and $x_2$ be two real numbers and define the column vector $\mathbf{x}=[x_1,x_2]$. Let $\mathbf{A}_1$ and $\mathbf{A}_2$ be two $2\times 2$ real symmetric matrices. Then I need to plot the ...
1k views

### How to change element color in Periodic Table?

The command ColorData["Atoms", "Panel"] generates a periodic table. As I don't want to reinvent the wheel, I asked myself how to change the color of each cell ...
280 views

### Charts performance

Evaluating the following lines in my computer takes near six seconds in Mathematica 10 and near 5 in Mathematica 9. I consider this very slow as only quantiles are being calculated from data to ...
151 views

### Revolving an axisymmetric image for volumetric rendering

I have a series of axisymmetric images of a jellyfish swimming in fluid. Overlaid on these images are plots of the Lagrangian coherent structures associated with swimming, which highlight the fluid ...
90 views

### How to minimize a list of data points?

I have a list called diff1: ...
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### Exporting BSplineSurface to STL

I have encountered some difficulties getting BSplineSurface to export to STL. The following code works and generates a triangulated polygon mesh from the NURBS ...
105 views

### Plotting a transformed region only works with integer inputs

I can't figure out why the following code only works with integers. ...
1k views

### Ragged Diamonds

diamond[n_Integer] := Table[1, {#}] & /@ (Range[n]~ Join~Range[n - 1, 1, -1]) diamond[5] // MatrixForm How could a more functional, "tablefree", solution ...
278 views

### Text with subscript is automatically Italic

I am creating a figure for a document using Graphics in which there is Text with some variables and again those same variables ...