Peer reviewed
Direct linkERIC Number: EJ988549
Record Type: Journal
Publication Date: 2012-Nov
Pages: 4
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0746-8342
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Available Date: N/A
Idempotents a la mod
Sibley, Thomas Q.
College Mathematics Journal, v43 n5 p401-404 Nov 2012
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.
Descriptors: Arithmetic, Mathematics Instruction, Problem Solving, Mathematical Concepts, Multiplication, Equations (Mathematics), Mathematics Activities
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
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