View of /trunk/webwork2/courses.dist/modelCourse/templates/setOrientation/prob11.pg

    1 DOCUMENT();        # This should be the first executable line in the problem.
    2 
    3 loadMacros(
    4   "PGstandard.pl",
    5   "MathObjects.pl",
    6   "PGunion.pl",
    7   "parserOrientation.pl",
    8   "PGcourse.pl",
    9 );
   10 
   11 $showPartialCorrectAnswers = 1;
   12 
   13 TEXT(beginproblem());
   14 Title("Multiple Answers in One Blank");
   15 
   16 ##############################################
   17 
   18 Context("Numeric");
   19 
   20 $a = random(1,5,1);
   21 $f = Formula("1/(x^2-$a^2)")->reduce;
   22 
   23 Context()->texStrings;
   24 BEGIN_TEXT
   25 
   26 You may sometimes be asked to provide more than one answer in a single
   27 answer blank.  For example, you may need to enter all the values where
   28 a function is not defined.  In this case, you should separate your
   29 answers by commas.  Such an answer is called a
   30 ${BITALIC}list${EITALIC} in $WW.  Note that you need not enter
   31 multiple answers for a list; a single number is a legal answer (there
   32 might only be one point where the function is undefined, for
   33 instance).
   34 $PAR
   35 
   36 $BBLOCKQUOTE
   37 The function \(\displaystyle f(x)=$f\) is not defined at these \(x\) values: \{ans_rule(20)\}.
   38 $EBLOCKQUOTE
   39 
   40 END_TEXT
   41 Context()->normalStrings;
   42 
   43 ANS(List($a,-$a)->cmp);
   44 
   45 ##################################################
   46 
   47 $a = random(1,5,1);
   48 $f = Formula("1/(x^2+$a^2)")->reduce;
   49 
   50 Context()->texStrings;
   51 BEGIN_TEXT
   52 
   53 When you are asked for a list of numbers, another possible answer is
   54 that there are ${BITALIC}no${EITALIC} numbers that satisfy the
   55 requirements.  In that case, you should enter ${LQ}\{student
   56 "NONE"\}${RQ} as your answer.
   57 $PAR
   58 
   59 $BBLOCKQUOTE
   60 The function \(\displaystyle f(x)=$f\) is not defined at these \(x\) values: \{ans_rule(20)\}.
   61 $EBLOCKQUOTE
   62 
   63 END_TEXT
   64 Context()->normalStrings;
   65 
   66 ANS(String('NONE')->cmp);
   67 
   68 ##################################################
   69 
   70 ENDDOCUMENT();        # This should be the last executable line in the problem.