Mathematica

Launching several Mathematica programs from DOS command
Hi, Is it possible to run Mathematica (evaluate cells) with DOS Command? I am working with Mathematica 5.2 and I would like to launch a batch of Mathematica programs (that hardly can be written in text file as suggested in the batch mode), each program creating different output files (.xls). No problem to open th... 9 Feb 2010 08:21

Derivative of Interpolation function is
Hi Dominic, NIntegrateInterpolatingFunction from FunctionApproximations` package will do the trick: In[10]:= Needs["FunctionApproximations`"] In[11]:= NIntegrateInterpolatingFunction[ 1/(xfun[t] + I yfun[t]) (xdfun[t] + I ydfun[t]), {t, 1, 884}] Out[11]= -7.16706*10^-17 + 6.28319 I Regards, Leonid ... 8 Feb 2010 08:52

Exception message from java: MathLink connection was lost.
Hello, I wrote a java program (which runs some calculation on math kernel) with JLink interface but it crashes regularly and randomly with the exception: "Exception message: MathLink connection was lost. Exception class: com.wolfram.jlink.MathLinkException Exception cause: null". My system: winXP(prof), Math... 14 Feb 2010 08:27

Test function argument with VectorQ and NumericQ
Hi there, in order to get my NIntegrate running properly it seems that I need to ensure that my functions actually take numeric arguments (without NIntegrate trying to do some symbolic stuff before). For a simple case something like f[x_?NumericQ] := (stuff) seems to work fine. However, I do use vectors (... 9 Feb 2010 02:55

Viviani's Curve
How to write a cod of Viviani's Curve was painted in the red color for Mathematica 5.2? Help, please. Thanks, Arnold. ... 8 Feb 2010 08:52

Park's and Bergstrom's packages
Hi there, I use David Park's packages (DrawGraphics and Presentations) together with Ted Bergstrom's Simplex package. Both are great packages and helped me a lot. To me it seems that there is a conflict between the Simplex and the Presentations package. Whenever I try to load SimplexDrawGraphics I get the f... 14 Feb 2010 06:17

Integral confusion
All: Is this integral wrong? If not could someone explain the minus sign inside the log? Integrate[1/(x + 1) - 1/(x + 6), x] // Simplify log(-2 (x + 1)) - log(2 (x + 6)) Thanks, Jon.= ... 10 Feb 2010 04:29

parallel table
Hello, I would like to create a "film" from the numerical data that I got. Hence, I've created a table of plots and then by exporting to gif I can observe the dynamics. The problem is that I'd like to have many plots inside this table (many frames of my film, so to say) and it takes a hell of a time. This is why I... 10 Feb 2010 04:29

NDSolve with Dirichlet boundary condition
Hello, I was not able to solve the following differential equation with Mathematica 7.01.0 using: NDSolve[{D[x[r]x'[r],r]==0, x[0]==10, x[1]==1}, x, {r,0,1}] Since my original problem is inhomogeneous and involves interpolating functions DSolve is not an option. Is there a way to solve this problem using ... 17 Feb 2010 00:07

a harmless notebook crashes Windows 7: who else had it?
*Dear Community, I have recently installed Mathematica 7.0.1.0 (the Premier Service - related Home Edition) on my laptop (ASER Aspire 4810TG with Windows 7 Home Edition). I faced a problem that started to show up right after the installation of Mathematica: Windows crashes always, if I open a certain noteb... 9 Feb 2010 02:55