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| From: | z_axis |
| Subject: | why cannot i use sqrt ? |
| Date: | Tue, 08 Jan 2013 15:59:28 +0800 |
| User-agent: | Opera Mail/11.62 (FreeBSD) |
GNU Prolog 1.4.2 By Daniel Diaz Copyright (C) 1999-2012 Daniel Diaz | ?- sqrt(100). uncaught exception: error(existence_error(procedure,sqrt/1),top_level/0) | ?- Sincerely!
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