Introduction to Matrices

Introduction to Matrices

What is a matrix?

A matrix is a rectangular array of variables or constants in horizontal rows and vertical columns enclosed in brackets.

1 6 9 5 3 02 7 4

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Element:

each value in a matrix; either a number or a constant.

Dimension - number of rows by number of columns of a matrix.

1 3 4 2

ROW

COLUMN

Equal Matrices-two matrices that have the same dimensions and each element of one matrix is equal to the corresponding element of the other matrix.

ReferencesAlgebra lessons at Coolmath.com - matrices. (2015). Retrieved June 22, 2015, from http:// www.coolmath.com/algebra/24-matricesAufmann, R. N., Barker, V. C., & Lockwood, J. S. (2004). Intermediate algebra with applications. Boston: Houghton Mifflin. Matrices lesson 1 - what is a matrix, dimension of a matrix, elements of a matrix [Video file]. (2014, February 7). Retrieved from https://www.youtube.com/watch?v=0UOQnahyHekMatrices. (2014). Retrieved June 22, 2015, from http://www.mathsisfun.com/algebra/matrix-introduction.html