For questions specific to Version 8 of Mathematica.

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0
votes
1answer
110 views

Mathematica crashes after some iterations

I wrote a Mathematica script, which calculates an integral value at a list of points and writes it to a file: ...
24
votes
0answers
559 views

What calendar is Mathematica using for dates in the distant past?

It appears that Mathematica treats all dates as proleptic Gregorian dates by default, a hypothesis that can be easily tested by using AbsoluteTime to compute the ...
9
votes
0answers
1k views

Download Mathematica 8 Trial

My school uses mathematica 8 on several of their computers. I would like to download a trail version for my home computer. I would like the same version. Is there a place I can download mathematica ...
8
votes
0answers
184 views

Break[] inside ColorFunction

f[x_?NumericQ]:= (Do[Break[],{i,1,2}];x) Plot[x,{x,0,1},ColorFunction->(ColorData["Rainbow"][f[#]]&)] Break::nofwd: No enclosing For, While, or Do found ...
5
votes
0answers
135 views

Issue with FindCurvePath

I have a problem with the function FindCurvePath. In some cases it crashes the Mathematica 9 Kernel. Here an example, where it crashes the kernel: ...
5
votes
0answers
99 views

Expansion of $E(i c \mid m)$ at $c\to\infty$?

Currently, I am using a Windows machine with Mathematica 8. I noticed a difference in a series expansion of the function EllipticE[] in comparison with a result ...
4
votes
0answers
137 views

Version 8.0 integrates but Version 9.0.1 doesn't

I am trying to run the following integral in version 9.0, but it fails: ...
4
votes
0answers
223 views

NullSpace[_, Method->“OneStepRowReduction”] is sometimes wrong; how can I work out when this happens?

(This is on MMA 7.0.1.0 on OS X) I've just found a large matrix m for which NullSpace[m] and ...
3
votes
0answers
148 views

Method Shrinkwrap Messes up editting Graphics

If you try resizing or moving the Inset in the following interface, the Graphics becomes incredibly jerky and borderline ...
3
votes
0answers
92 views

An recurrence equation that can be solved in version 7 but not in version 8

A friend of mine showed me this code sample: RSolve[{a[n] == a[n - 5] + 1, Sequence @@ Table[a[i] == 1, {i, 5}]}, a[n], n] // Timing It's solved by version 7 in ...
2
votes
0answers
75 views

Det and MatrixRank freezes on SparseArray with nonzero default value

Why does the following simple code never come to an end (at least with version 8) n = 5; mat = SparseArray[{i_, i_} -> 1, {n, n}, -1/(n - 1)]; MatrixRank[mat] ...
2
votes
0answers
67 views

Must Run Cell Twice to Display Values

What is going on here? Print[InputField[]] CellPrint[TextCell["my\"text", "Text", ShowStringCharacters -> True]] If I insert the above code into a blank ...
2
votes
0answers
179 views

Derivatives of list elements

Could someone explain the odd behavior of the Derivative function when drawing arguments from lists? We have, ...
2
votes
0answers
356 views

mathematica startup time

I have Mathematica 7 and 8 installed on my laptop. Mathematica 7 starts quite fast, but Mathematica 8 is extremely slow to start. In the Option Inspector I canceled the "welcome screen" option at ...
1
vote
0answers
68 views

Bug in ListVectorPlot?

Trying to evaluate the following expression kills my kernel (Mathematica 8.0.0.0): ...
1
vote
0answers
152 views

Positive integrand giving negative answer

I'm integrating a positive function f(t) times sin(t) from 0 to pi/5 and get -38. Actually f is slightly negative for a short time (smallest value ~ -0.0005), but far from enough to explain this. ...
1
vote
0answers
228 views

Can not launch Mathematica 8 on Lubuntu

I am trying to launch Wolfram Mathematica 8 Home Edition. The installation itself occurred without a hitch. Note: "..." indicates my machine name, username, etc. Linux Version ...$ uname -a Linux ...
0
votes
0answers
282 views

Problem enabling PlotLegends in Mathematica 8.0

I am trying to make a legend for a simple plot in Mathematica 8, but does not seem to recognise the command PlotLegends. I declared beforehand ...
0
votes
0answers
139 views

Behavior of copy and paste with different image formats

Ok, let's say I create a 1x1 pixel image. i = Image[{{0}}, "Byte"]; Now I Export["image.png", i] the image and import it into ...