From help-request at octave dot org Mon Sep 13 11:14:25 2004
Subject: Re: Symbolic expand function doesn't always do anything
From: Geraint Paul Bevan <g dot bevan at eng dot gla dot ac dot uk>
To: edA-qa mort-ora-y <eda-qa at disemia dot com>
CC: Benjamin Sapp <bsapp at lanl dot gov>, help@octave.org
Date: Mon, 13 Sep 2004 17:05:50 +0100

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Benjamin Sapp wrote:

| octave:47> expand( (x-vpa("1"))^vpa("3"))
| ans =
|
| -1+x^3-3*x^2+3*x
|
| It's a bit cumbersome but I don't think there's a better solution.
|
| Good luck,
| Ben.
|

I seem to be mentioning gino a lot lately - symbolic questions are
becoming popular on the list. If you install gino[1], you can expand the
expression in a slightly less cumbersome manner because it works with
Octave strings rather than trying to interpret expressions:

octave> g_expand ('(x-1)^3')
ans = -1+3*x+x^3-3*x^2


[1] gino: http://sourceforge.net/projects/mtt/

- --
Geraint Bevan
http://www.mech.gla.ac.uk/~gbevan

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