closed form of product



 > I wanted to use closedform()-function, but I couldn't.

It appears that closedform is only available in the commercial Macsyma.

 > I want to start maxima with a file in which I wrote some maxima expressions.
 > I want maxima to do some expressions without my input.

To do this create a file maxima.bat somewhere in the PATH
containing the following line:


c:\maxima\src\saved_maxima %1


assuming c:\maxima is where maxima-5.5 is installed. 
If the file  prob.max  contains a sequence of maxima commands,
then the following command issued from the DOS-prompt


maxima < prob.max > soln.txt


will run Maxima on the commands in prob.max and put the output in a file 
called soln.txt

Sincerely,
Moses