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Unformatted text preview: c Kendra Kilmer August 18, 2011 Section 2.4  Matrices Definitions: 1. A matrix is an ordered rectangular array of numbers. A matrix with m rows and n columns has size m n. The entry in the ith row and jth column is denoted by ai j . 2. A row matrix is a matrix of size 1 n. 3. A column matrix is a matrix of size m 1. 4. Two matrices are equal if they have the same size and equal corresponding entries. Example 1: Given the following matrix equation, what are the values of a, b, and c? a 5 8 2c  15 = 6 3b + 4 6 19 Matrix Operations: 1. Addition (You can only add matrices that have the same size) Example 2: Perform the following matrix operation: 1 2 4 5 + 3 4 6 7 2. Subtraction (You can only subtract matrices that have the same size) Example 3: Perform the following matrix operation: 1 2 4 5  3 4 6 7 3 ...
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This note was uploaded on 03/04/2012 for the course MATH 141 taught by Professor Jillzarestky during the Fall '08 term at Texas A&M.
 Fall '08
 JillZarestky
 Matrices

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