## Forum archive 2000-2006

### Thomas Hagedorn - Error in Answer Evaluator?

by Arnold Pizer -
Number of replies: 0
 Error in Answer Evaluator? topic started 9/22/2003; 11:19:58 PMlast post 9/23/2003; 12:17:32 PM
 John Jones - Re: Error in Answer Evaluator?  9/23/2003; 12:17:32 PM (reads: 1044, responses: 0) Hi, What you suggest would be nice, but really the instructor's answer should be good. Otherwise WW will have to hunt for its domain, so I think it is reasonable to expect problem writers to provide a valid domain if there is a risk that the default will not work. On the other hand, I don't think WW should say "Error" to a student when it cannot evaluate the student answer at a sample value. For example, if the answer is sqrt(1-x) and a student enters sqrt(x-1), WW replies error: Can't take sqrt of -0.742.Error detected evaluating student input at (0.2580000484 )We already have students thinking that WW can't handle the way they enter their answers. In this example, the answer may be wrong but it is syntactically ok, so students are mislead by the message. I think that the error should be considered internal to WW and the student should just be told that the answer is incorrect. Has this been changed in 1.9 or 2.0? John <| Post or View Comments |>