[LON-CAPA-users] Using symbols for "infinity" in responses

[Rex Abert]

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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