In this unit you will study dimensional matrices and their applications. First, you are introduced to networks and the value of matrices in counting routes. Later, the geometric effect of matrix operations—matrix product, matrix sum, and scalar multiplication—are examined, and students come to see, geometrically, that matrix multiplication for square matrices is not a commutative operation, but that it still satisfies the associative and distributive properties A third context for the use of matrices is the study of systems of linear equations.
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