[LON-CAPA-users] Having an equation or a range as a response
Gerd Kortemeyer
korte at lite.msu.edu
Sun Jan 22 08:38:32 EST 2012
Hi,
On Jan 22, 2012, Seema Ali wrote:
> Where can I get a list of Maxima questions that Lon Capa uses?
A few things from MAXIMA we have packaged nicely in <formularesponse> and <mathresponse> (with a "switch" for R or MAXIMA). But, using the &cas-command, you can call any function within MAXIMA, http://maxima.sourceforge.net/documentation.html . I usually try things out on the command-line first (just running MAXIMA in a terminal) before putting them into LON-CAPA.
BTW, we also have GeoGebra support, which we currently do not "advertise" in the templates. Students can enter graph sketches, which are then graded according to rules.
> Oh and I also tested:
>
> x^3 = 125 and it failed on both which is good if you're looking for linear solutions.
>
That's apparently because MAXIMA wants to solve this in the complex plane:
(%i3) solve(x^3=125,x);
5 sqrt(3) %i - 5 5 sqrt(3) %i + 5
(%o3) [x = ----------------, x = - ----------------, x = 5]
2 2
I guess I need to work in some way to tell MAXIMA if it should stay real.
- Gerd.
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