matricies
Subject:
Algebra [1]
Pre-AP Algebra 2 * Goal(s): Add matrices Subtract matrices Multiply matrices (by a scalar) Find determinants of matrices Matrix Basics A matrix is a rectangular arrangement of numbers into rows and columns The order of a matrix is the number of rows and columns in the matrix Matrices are equal if all entries in corresponding locations are equal Example: This is a 2 x 3 (?2 by 3?) matrix because it has 2 rows, 3 columns Matrix Basics The address of an entry is its location in a matrix, expressed by using the lower case matrix letter with row and column number as subscripts. Example: 5 is located in the second row and third column of matrix A, this means a2,3=5 Add & Subtract Matrices In order to add or subtract matrices, they must be the same dimensions