## Forum archive 2000-2006

### Holly Carley - preview/answer entered problem

by Arnold Pizer -
Number of replies: 0
 preview/answer entered problem topic started 9/28/2004; 10:45:46 AMlast post 9/28/2004; 2:41:01 PM
 Holly Carley - preview/answer entered problem  9/28/2004; 10:45:46 AM (reads: 1230, responses: 5) A student enters 1/12 as the (correct) answer to a problem. The preview gives 1/12 0 and says she entered 0. It is therefore, of course, counted wrong. If she entered 12+ it is correct. Any idea about what is causing this problem? Holly <| Post or View Comments |>

 Arnold K. Pizer - Re: preview/answer entered problem  9/28/2004; 10:57:26 AM (reads: 1432, responses: 0) Hi Holly, Can you give us some more informationn on this? E.g. what problem is the student working on? Entering 1/12 (when I try it) gives the correct response and entering 1/12+, 112, 12+ all give syntax errors as they should. Are other students having similar problems? Arnie <| Post or View Comments |>

 Holly Carley - Re: preview/answer entered problem  9/28/2004; 11:28:31 AM (reads: 1432, responses: 0) It is only for one student as far as I can tell. The code for the problem follows. It sounded like more a problem with how webwork understands the input. The code for the problem follows. Holly ##DESCRIPTION ## Evalute a limit of a fraction of two polynomials, ## involves factoring ##ENDDESCRIPTION ##KEYWORDS('limits', 'factoring') DOCUMENT(); # This should be the first executable line in the problem. TEXT(&beginproblem); $showPartialCorrectAnswers = 1; @rt = (4,9,16,25,36);$i1 = random(0,4,1); $c = random(1,10,1);$a = $rt[$i1]; $b =$a+$c;$a2 = \$a**.5; TEXT(EV2(<

 Arnold K. Pizer - Re: preview/answer entered problem  9/28/2004; 12:21:35 PM (reads: 1493, responses: 0) Hi Holly, This problem just uses the standard answer evaluator num_cmp which has been used by many thousands of students. Could it be that the student entered 1/12 0 (1 slash 12 space 0)? WeBWorK interprets a space as multiplication (jutaposition) and this gives 0. At least that is what WeBWorK is telling you that the student entered. Did you see what the student entered? Can this bug be repeated? Arnie <| Post or View Comments |>