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Miel, George1
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Modular Arithmetic in the Marketplace.
Peer reviewed Peer reviewed
Gallian, Joseph A.; Winters, Steven – American Mathematical Monthly, 1988
Several schemes use modular arithmetic to append a check digit to product identification numbers for error detection. Some schemes are discussed, including ones for money orders and library books. Then a foolproof method is presented. (MNS)
Descriptors: College Mathematics, Error Patterns, Higher Education, Mathematical Applications
Calculator Calculus and Roundoff Errors.
Peer reviewed Peer reviewed
Miel, George – American Mathematical Monthly, 1980
The author discusses the use of calculators in calculus classes and difficulties caused by roundoff errors. References for advanced follow-up topics are given. (Author/MK)
Descriptors: Calculators, Calculus, College Mathematics, Error Patterns