[LON-CAPA-users] Implicit Answer

[Rex Abert]

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 at mail.lon-capa.org [lon-capa-users-bounces at mail.lon-capa.org] on behalf of Peter Dencker [dencker at 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!
>
>
>
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>


--
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 at math.uni-luebeck.de

     www.math.uni-luebeck.de
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