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Peer reviewedAmir-Moez, Ali R. – School Science and Mathematics, 1992
Presents a short study of proper values of two-by-two matrices with real entries. Gives examples of symmetric matrices and applications to systems of linear equations of perpendicular lines intersecting at the origin and central conics rotated about the origin to eliminate the xy term from its equation. (MDH)
Descriptors: Analytic Geometry, Mathematical Applications, Mathematical Formulas, Mathematics Education
