1313_section2o4

1313_section2o4 - Section 2.4 Matrices 1 Section 2.4 -...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Section 2.4 Matrices 1 Section 2.4 - Matrices A matrix is an ordered rectangular array of numbers. A matrix with m rows and n columns has size or dimension n m . The entry in the i th row and j th column is denoted by ij a . The real numbers that make up the matrix are called entries or elements of the matrix. Example 1: Given ---- = 11 3 1 20 10 9 3 5 7 7 2 A , a. what is the dimension of A ? b. identify 33 a . A matrix with only one column or one row is called a column matrix (or column vector ) or row matrix (or row vector ), respectively. Example: = 5 4 2 A , ( 29 9 1 = B A square matrix is a matrix having the same number of rows as columns. Example: 1 4 9 3 Addition and Subtraction of Matrices If A and B are two matrices of the same dimension, 1. The sum A + B is the matrix obtained by adding the corresponding entries in the two matrices....
View Full Document

Page1 / 3

1313_section2o4 - Section 2.4 Matrices 1 Section 2.4 -...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online