closed form of product



I sent similar e-mail like this.
but my e-mail adress is not available somehow.
So I send this again from another adress.

I have 2 questions.

I use xmaxima5.5 on Windows Me.

<closed form>
I wanted to use closedform()-function, but I couldn't.
I asked Maxima mailing list.
I got a reply and I could know how to use nusum().
So I can get a closed form of summation.
However I can't get a closed form of product.

I want to know how to get a closed form of product.
Please teach me.


<starting maxima with file>
I have one more question.


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.


Please teach me.


I'm sorry for my lack of my English ability.
I'll wait for replies.

Thank you.
-----------------------
Hiroyuki Tanaka
htanaka@futamura.info.waseda.ac.jp
hiroyuki@zb3.so-net.ne.jp