Hi
I was wondering how many people are using the MapleTA Blackboard plugin?
Thanks - Michael

Hi.
I'd like to write a maple TA question involving a sketch.
There are standard tests used to evaluate whether the sketch designed by the student is correct, such as :
\check{linear}
\check{goes_through(0,1)}
etc...
There is a certain tolerance in these tests. If the sketch aproximately goes through point (0,1) in the previous example, it will be considered correct.
My questions are :
What is this tolerance ?
Is it possible to set this tolerance ?
if not,
Is it possible to artificially create a tolerance factor (with something which would look like :
(value(0)-1)

In order to generate a 2x2-matrix in the question text I use

$display_matrix =maple("printf(MathML:-ExportPresentation(<<($a),($c)>|<($c),($b)>>))");

where $a, $b, $c are random numbers (see below for full question source).

In MapleTA 2.0.1 the question operates correctly. I quote here an exemplatory call to Maple taken from the console:

jvm 1 | To Maple --> printf(MathML:-ExportPresentation(<<(-4),(6^(1/2))>|<(

6^(1/2)),(-5)>>))

However, instead of depicting the corresponding matrix, MapleTA 2.5 depicts the Maple code. That this will happen can also clearly be seen in the call to Maple:

jvm 1 | To Maple --> printf("%m", 'Matrix(2,2,{(1, 1) = -2, (1, 2) = 2*2^(1

/2), (2, 1) = 2*2^(1/2), (2, 2) = -4},datatype = anything,storage = rectangular,

order = Fortran_order,shape = [])');

How does it come that MapleTA 2.5 decides to add "%m" to printf? Is there a possibility to fix this by making appropriate changes in a setup file?

I would be grateful for any hint.

Peter

---

Full question source (the question asks for the eigenvalues of the shown matrix):

mode=Multi Formula@

name=eigenvalues (more ergonomic)@

editing=useHTML@

algorithm=$case = range(1,3);

$c = maple("[sqrt(6),sqrt(8),2][$case]");

$sign = range(-1,1,2);

$b = range(-5,5);

$a = $b+($sign)*($case);

$display_matrix = maple("printf(MathML:-ExportPresentation(<<($a),($c)>|<($c),($b)>>))");

$ans1=maple("1/2*(($a)+($b)-sqrt(($case)^2+4*($c)^2))");

$ans2=maple("1/2*(($a)+($b)+sqrt(($case)^2+4*($c)^2))");@

question=Bestimmen Sie die Eigenwerte von $display_matrix.

I had a few students drop after the first few days of class, and I've deleted their records from the "administration" part of the gradebook in Maple T.A., but their names continue to appear when I generate student statistics reports. Is there a way to prevent their names from appearing the in report?
Thanks,
Marc

I have a student who missed a Maple T.A. assignment, but he made the work up for me later by turning in a hard copy. Now I'd like to enter his grade and let Maple T.A. continue to keep accurate track of his record, but I can't make this assignment appear on the student's record.
Any suggestions?
Thanks,
Marc

Hello - thanks rcoe for your previous post.
One of my students encountered a system error after clicking the link to his assignment and entering his username and password. I created a "fake student" and was able to recreate the error a couple times after randomly opening and closing some assignments. The error stopped occuring after I logged in as the instructor and cleared any active assignments the student had.
I am running Maple TA version 2.0.1. Is this a bug or do you have any suggestions on how to avoid this error in the future?
Here are the two error messages I received (at different times):

I recently gave a Maple T.A. assignment to my students, and now I'd like to extend the deadline by a day or two. Should I be wary of any side-effects to changing the due date after students have started working on the assignment?
Thanks,
Marc
(I mean technical side-effects, not the side effect of having my students think I'm a pushover :)