| topic started 4/8/2002; 5:01:23 PM last post 4/8/2002; 9:27:00 PM |
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4/8/2002; 9:27:00 PM (reads: 1604, responses: 0) |
| Hi Barbara, Look at http://webhost.math.rochester.edu/webworkdocs/docs/pglanguage/manpages/num_cmp. The short answer is that ANS( num_cmp(4, tol=>.001)); will generate an answer evaluator which will accept answers between 3.999 and 4.001 (I'm not sure if the interval is open or closed :-) ) Setting ANS( num_cmp(100, reltol=>1) ); will accept answers within 1% of the correct answer (e.g. + or - one in this case). Hope this helps answer your question. Did you want an answer evaluator that checked that the student's answer was correct to exactly 3 decimal places, no more, no less? That's doable, but not automatic. -- Mike |