[ww-bugs] Bug 2650: New: parserRadioButtons causing duplication in mathematics

[bugzilla-daemon at webwork.maa.org]

http://bugs.webwork.maa.org/show_bug.cgi?id=2650

           Summary: parserRadioButtons causing duplication in mathematics
           Product: Problem libraries
           Version: unspecified
          Platform: PC
               URL: /opt/webwork/courses/hope_math_131_pearson/templates/H
                    ope/Calc1/00-00-Essays/GQ_Limits_11.pg_with_problemSee
                    d=123456
        OS/Version: Windows
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: Library
        AssignedTo: jj at asu.edu
        ReportedBy: paultpearson at gmail.com
                CC: dpvc at union.edu
        Web browser ---
           version:


Created an attachment (id=149)
 --> (http://bugs.webwork.maa.org/attachment.cgi?id=149)
dupliation of math text in radio button list

Hi,

On the testcourses server:

Using mathematics \( stuff \) inside of an option that is part of a radio
buttons list causes duplication of the math text and some other errant
behavior.  Below is the source code for the error.  I have also attached a
screenshot.  

Thanks!

Paul


###################################
#  Initialization

DOCUMENT();        
loadMacros(
"PGstandard.pl",
"MathObjects.pl",
"PGchoicemacros.pl",
#"PGgraphmacros.pl",
#"parserPopUp.pl",
"parserRadioButtons.pl",
"PGessaymacros.pl",
#"PGunion.pl",
"PGcourse.pl", 
);

TEXT(beginproblem());

install_problem_grader(~~&std_problem_grader);

$showPartialCorrectAnswers = 0;
$refreshCachedImages = 1;

# $essay_instructions can be redefined globally by
# creating a string $essay_instructions in a macro
# file "PGcourse.pl" in the course templates/macros/
# directory.

if (!defined($essay_instructions)) {
$essay_instructions = 
"Use complete sentences and correct grammar, 
spelling, and punctuation. Be specific and 
detailed. Write as if you were explaining the 
answer to someone else in class.";
}

######################################
#  Setup

Context("Numeric");

$a = random(200,299,1);
#do { $b = random(2,9,1); } until ($b != $a);

#SRAND(2); # fix the ordering in the multiple choice

$radio = RadioButtons(
  ["\( \displaystyle \lim_{x\to $a} f(x) \) cannot exist",
   "\( \displaystyle \lim_{x\to $a} f(x) \) could be zero",
   "\( \displaystyle \lim_{x\to $a} f(x) \) must approach \( \infty \)",
   "None of the above"],
  "\( \displaystyle \lim_{x\to $a} f(x) \) could be zero", # correct answer
  last => ["None of the above"],
  separator=>"$BR$BR"
);


#######################################
#  Main text

Context()->texStrings;
BEGIN_TEXT
If a function \(f\) is not defined at \(x=$a\), then
$BR
$BR
\{ $radio->buttons() \}
$BR
$BR
In the answer box below, explain your reasoning for the choice you made above. 

$essay_instructions 

$BR
\{ essay_box(15,60) \}
END_TEXT
Context()->normalStrings;


#######################################
#  Answer evaluation

ANS( $radio->cmp() );

ANS( essay_cmp() );

#######################################
#  Solution

Context()->texStrings;
BEGIN_SOLUTION
\(f($a)\) need not be defined in order for \(\displaystyle{\lim_{x\rightarrow
$a}f(x)}\) to exist, and it does not have to approach \(\infty\). However, the
limit could be zero, for example consider \( f(x)=
0\) for all \(x \neq $a\), and \(f($a)\) not defined. 
END_SOLUTION
Context()->normalStrings;

COMMENT('Rated Quick.  Uses essay answer grader.  Multiple choice answers are
always in the same order to make grading easier.');

ENDDOCUMENT();

-- 
Configure bugmail: http://bugs.webwork.maa.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching all bug changes.