I was just wondering about whether there is (or should be) a
"standardized" way to do it. I have decided that what I will do is use
a formula response with preprocessing to make student responses
case-insensitive.
Rex
On 5/26/20 6:13 PM, Justin Gray wrote:
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Hi Rex,
I see that Purdue has a guide on Entering Math Expressions in LON-CAPA at
https://www.math.purdue.edu/academic/files/courses/2016summer/MA16010/EnteringMathExpressionsinLON-CAPA.pdf
While it is possible to author questions in LON-CAPA that accept this
syntax, I do not believe that this is strict Maxima syntax:
Infinity is written as inf
Negative infinity is written as minf (though I think -inf will still work)
The constant pi is written %pi
The exponential function is written as %e^(x) or exp(x)
ln(x) is written as log(x) - this is confusing to students but you
could write a mathresponse problem to redefine ln(x) to be log(x) in
the answer algorithm if you want.
ln(x) is otherwise interpreted as l*n*x which makes accepting
equivalent answers difficult.
Best,
Justin
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*Justin Gray*
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Simon Fraser University | SCK 10531
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On Tue, May 26, 2020 at 5:34 AM Rex Abert <abe...@tcc.fl.edu
<mailto:abe...@tcc.fl.edu>> wrote:
I am developing some <formularesponse> questions for Calculus I limits
at infinity. Sometimes the answer is +infinity or -infinity,
sometimes
a constant (horizontal asymptote). If I set the correct response as
"inf" (lowercase), the previewer correctly interprets the symbol as
expected. A guide published by Purdue suggests that all caps
should be
used, "INF." I had the answer in a question set as "-inf" and a
student
entered "-INF" and it was marked incorrect, as Maxima should, because
uppercase and lowercase symbols are different to Maxima.
I guess I am just looking for clarification on a standard way to
do this
in LC, given the behavior of the javascript previewer.
--
Rex Abert
Professor of Mathematics
Tallahassee Community College
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Rex Abert
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Tallahassee Community College
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