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Alexey L. Voskov – International Journal of Mathematical Education in Science and Technology, 2024
QR decomposition is widely used for solving the least squares problem. However, existing materials about it may be too abstract for non-mathematicians, especially STEM students, and/or require serious background in linear algebra. The paper describes theoretical background and examples of GNU Octave compatible MATLAB scripts that give relatively…
Descriptors: Mathematics, Algorithms, Data Science, Mathematical Concepts
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Fay, Temple H.; Miller, H. Vincent – Mathematics and Computer Education, 1990
Discusses a numerical technique called the method of adjoints, turning a linear two-point boundary value problem into an initial value problem. Described are steps for using the method in linear or nonlinear systems. Applies the technique to solve a simple pendulum problem. Lists 15 references. (YP)
Descriptors: Algebra, Algorithms, College Mathematics, Higher Education
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Knill, George – Mathematics Teacher, 1980
The formula used by the telephone company to determine long distance charges is presented and several sample problems are included. (MP)
Descriptors: Algebra, Algorithms, Enrichment Activities, Geometric Concepts
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Schoenfeld, Alan H.; Arcavi, Abraham – Mathematics Teacher, 1988
The concept of variable is central to mathematics teaching and learning in junior and senior high schools. Described is a structured reflexive exercise designed to reexamine the notion of variable and to rediscover its richness and multiplicity of meaning. (PK)
Descriptors: Algebra, Algorithms, Equations (Mathematics), Functions (Mathematics)