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List:       lon-capa-users
Subject:    Re: [LON-CAPA-users] Implicit Answer
From:       Rex Abert <ABERTR () tcc ! fl ! edu>
Date:       2015-03-17 14:56:37
Message-ID: BY1PR03MB1340AF5E601EF9ED98696138E2030 () BY1PR03MB1340 ! namprd03 ! prod ! outlook ! com
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A year or two (or three?) ago, Gerd Kortemeyer provided a subroutine for exactly the \
purpose you need.  This led to the implementation of a new problem type, which is the \
first option in the section

Algebraic Response Problems

->Custom Response comparing Equations using Computer Algebra System

when creating a problem in Authoring space.

I have written several problems using this format, with various tweaks.  Some \
examples are

/res/tccfl/abertr/Precalculus/Conics/ConicSection01.problem
/res/tccfl/abertr/Precalculus/Conics/ConicSection02.problem
/res/tccfl/abertr/Precalculus/Conics/ConicSection03.problem
/priv/tccfl/abertr/Precalculus/Conics/Ellipse3.problem

There are several others in that same directory.  Feel free to browse and borrow all \
the code you need.  The source is open on all my problems.

Enjoy!

Rex Abert
Associate Professor of Mathematics
Tallahassee Community College
________________________________________
From: lon-capa-users-bounces@mail.lon-capa.org \
[lon-capa-users-bounces@mail.lon-capa.org] on behalf of Peter Dencker \
                [dencker@math.uni-luebeck.de]
Sent: Monday, March 9, 2015 5:40 PM
To: Discussion list for LON-CAPA users
Subject: Re: [LON-CAPA-users] Implicit Answer

Hello.

The use of customresponse makes it possible to apply the whole
capability of Perl for the analysis of the submissions. Could you give a
simple concrete example of a problem? (What submissions should be
regarded as correct?)

Peter

Am 03/09/2015 um 05:42 PM schrieb Bayu Irjanto:
> Hi,
> 
> I have been trying to author a problem that that uses an implicit answer.
> how can loncapa accepts an answer that looks like this ?
> 
> y^2-y=x^2+2
> 
> I always get an error when I try to author a problem that has an equal sign
> '=' as a part of the answer.I think the response cannot take '=' equal sign
> as a part of the answer.
> Is there a way around this?
> 
> 
> Thanks!
> 
> 
> 
> _______________________________________________
> LON-CAPA-users mailing list
> LON-CAPA-users@mail.lon-capa.org
> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
> 


--
Dr. Peter Dencker
     wissenschaftl. Mitarbeiter

UNIVERSITÄT ZU LÜBECK
     INSTITUT FÜR MATHEMATIK

     Ratzeburger Allee 160
     23562 Lübeck

     Tel +49 451 500 4254
     Fax +49 451 500 3373
     dencker@math.uni-luebeck.de

     www.math.uni-luebeck.de
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