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Revision 6431 - (view) (download)
| 1 : | apizer | 5801 | 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 : | gage | 6431 | TEXT(beginproblem()); |
| 14 : | apizer | 5801 | 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. |
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