[LON-CAPA-users] Response Math unable to understand formulaforincorrect responses

Seema Ali sali at vsb.bc.ca
Mon Jan 30 07:50:31 EST 2012

Maybe it is the different versions.  I'm using Maxima 5.25.1 on Windows.

-----Original Message-----
From: lon-capa-users-bounces at mail.lon-capa.org on behalf of Gerd Kortemeyer
Sent: Mon 1/30/2012 4:31 AM
To: Discussion list for LON-CAPA users
Subject: Re: [LON-CAPA-users] Response Math unable to understand formulaforincorrect responses

On Jan 30, 2012, at 12:13 AM, Seema Ali wrote:
> Is there a subtle difference between having the same is() expression in Maxima vs Lon Capa?

There should not be any difference, but there may be differences between different versions of Maxima. LON-CAPA distributes

Maxima 5.20.1 http://maxima.sourceforge.net
using Lisp SBCL 1.0.38-2.el5

Since Maxima was written as a command-line tool (with a human in front of the keyboard, who can interpret output and try things), they do not seem to be too worried about backward compatibility.

Having said that, some unexpected behavior may result from the fact that Maxima does not always automatically simplify. It seems like one has to force this at times using trigsimp(trigreduce(.)), so


may result in more reproducible results.

- Gerd.
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