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Re: Using manipulate in two cells in one note book crashes my computer.


sean k wrote:
> By the way, I'm using Mathematica 7.0.0. Windows vista home edition. 32 bit. I also recently updated to Java runtime 6.0 and I had some problems with Mathematica help crashing. So I uninstalled and reinstalled the Mathematica. 
> 
> Also have Mathematica 6.0 installed. (This problem persists in Mathematica 6 also )
> 
> I also have another CAS system and other stuff installed on here, but not sure if any of that is an issue. 
> 
> Anyway, Thanks for any info.
> 
> 
> 
> 
> 
> 
>       
> 
Mathematica uses its own Java embedded in the installation directories, 
so the main Java on your machine is not relevant unless you are 
compiling Java code for use with J/Link. Mathematica 7 uses Java 6.

Do use a different context for your two notebooks (when things work OK).

The problem is that your variable dsol is shared by the two calculations 
- so one changes its value, which triggers the other into action.....

I solved it my using a Module to localise dsol:

Manipulate[
  Module[{dsol},
   dsol = DSolve[{k1 k2 b[t] == k1 b'[t] + b''[t], b[0] == b0,
      b'[0] == bp0}, b[t], t];
   Plot[Evaluate[b[t] /. dsol], {t, 0, 10}, PlotRange -> All]], {k1,
   0.1, 10}, {k2, 0.1, 10}, {b0, 0.1, 10}, {bp0, 0.1, 10}]

David Bailey
http://www.dbaileyconsultancy.co.uk


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