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Autor/in | Sibley, Thomas Q. |
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Titel | Idempotents a la mod |
Quelle | In: College Mathematics Journal, 43 (2012) 5, S.401-404 (4 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
Sprache | englisch |
Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
ISSN | 0746-8342 |
DOI | 10.4169/college.math.j.43.5.401 |
Schlagwörter | Arithmetic; Mathematics Instruction; Problem Solving; Mathematical Concepts; Multiplication; Equations (Mathematics); Mathematics Activities |
Abstract | An idempotent satisfies the equation x[superscript 2] = x. In ordinary arithmetic, this is so easy to solve it's boring. We delight the mathematical palette here, topping idempotents off with modular arithmetic and a series of exercises determining for which n there are more than two idempotents (mod n) and exactly how many there are. (As Provided). |
Anmerkungen | Mathematical Association of America. 1529 Eighteenth Street NW, Washington, DC 20036. Tel: 800-741-9415; Tel: 202-387-5200; Fax: 202-387-1208; e-mail: maahq@maa.org; Web site: http://www.maa.org/pubs/cmj.html |
Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
Update | 2017/4/10 |