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Matrices and Determinants
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Elementary Linear Algebra Anton & Rorres, 9th Edition
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Chapter 12 - Matrices
Sep 12, 2014
10.19k likes | 23.71k Views
Lesson 12.1 – Adding and Subtracting Matrices. Take notes in your notebook. Work the problems in your notebook BEFORE advancing to the solutions. Chapter 12 - Matrices. A matrix is a rectangular arrangement of numbers into rows and columns . 4 -2 9 0 3 -5. A Matrix.
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- column matrix
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- aka column matrix
- aka row matrix
Presentation Transcript
Lesson 12.1 – Adding and Subtracting Matrices Take notes in your notebook. Work the problems in your notebook BEFORE advancing to the solutions. Chapter 12 - Matrices
A matrix is a rectangular arrangement of numbers into rows and columns. 4 -2 9 0 3 -5 A Matrix This is a 2 by 3 Matrix.
2 Rows and 3 Columns 4 -2 9 0 3 -5 A Matrix
Matrix - a rectangular array of variables or numbers in horizontal rows and vertical columns enclosed in brackets. • Element - each value in a matrix; either a number or a constant. • Dimension - number of rows by number of columns of a matrix. • **A matrix is named by its dimensions. Vocabulary
Find the dimensions of each matrix. Dimensions: 3x2 Dimensions: 4x1 Dimensions: 2x4
Find the dimensions of each matrix. (or square matrix) 3 x 3 1 x 4 (aka: row matrix) 3 x 5 4 x 1 2 x 2 (aka: column matrix) (aka: square matrix)
Column Matrix – a matrix with only one column. Row Matrix – a matrix with only one row. Square Matrix – a matrix that has the same number of rows and columns. Different types of Matrices
1.) -3 -2 6 -8 5 -7 -9 6 Adding Matrices + = 3 -10 -4 -1 Add the corresponding elements of each matrix.
Adding Matrices • To add two matrices, they must have the same dimensions. • To add, you simply add corresponding elements. Working matrix Answer Matrix
4 -2 9 -1 0 0 3 -5 3 7 Matrices can only be added if they have the same # of rows & columns Adding Matrices + 2 x 3 2 x 2
Adding Matrices Working matrix = 7 7 4 5 Solution matrix = 0 7 5 7
1.) -3 -2 6 -8 5 -7 -9 6 Subtracting Matrices - = -9 6 14 -13 Subtract the corresponding elements of each matrix.
Subtracting Matrices To subtract two matrices, they must have the same dimensions. You simply subtract corresponding elements. Working matrix Solution matrix
Subtracting Matrices Working matrix Solution matrix 2-0 -4-1 3-8 -5 2 -5 8-3 0-(-1) -7-1 5 -8 1 = = 1-(-4) 5-2 0-7 5 3 -7
1.) -3 -2 6 -8 5 -7 -9 6 2.) 3 -7 4 -3 7 -1 7 8 3.) -5 7 -6 5 -3 -9 -1 7 You try these + = = + = -
1.) -3 -2 6 -8 5 -7 -9 6 2.) 3 -7 4 -3 7 -1 7 8 3.) -5 7 -6 5 -3 -9 -1 7 You try these (Solutions) 3 -10 -4 -1 = + 7 -10 14 7 = + 1 2 -2 -16 = -
4.) 0 -3 -6 0 -1 4 3 1 5.) 1 1 4 -3 1 1 7 0 6.) -5 7 5 -7 -3 -9 3 9 You try these = - = - = +
4.) 0 -3 -6 0 6 -3 -1 4 3 1 -4 -2 5.) 1 1 4 -3 -3 4 1 1 7 0 -6 1 6.) -5 7 5 -7 0 0 -3 -9 3 9 0 0 You try these (Solutions) = - = - = +
Read Lesson 12.1 “Adding and Subtracting Matrices” in your textbook and review the Power Point lesson again. • Complete the 12.1 Vocabulary Worksheet • Review and complete the 12.1 Reteaching Worksheet Class work
In your textbook: Lesson 12.1/ 7- 17odd, 19-29 Homework
Matrix Logic Jim Mario Mike Shana Kelly Lisa Jim, Mario and Mike are married to Shana, Kelly and Lisa. Mario is Kelly’s brother and lives in Florida with his wife. Mike is shorter than Lisa’s husband. Mike works at a bank. Shana and her husband live in Kentucky. Kelly and her husband work in a candy store. Who is married to whom? X X O O X X X O X
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Rank. Rank of a nxn matrix A - number of linearly independent columns (or rows) of A / the dimension of the span of the columns. Matrices with . full rank (n x n, rank n) behave nicely: can be inverted, span the full output space, are one-to-one. ... PowerPoint Presentation Last modified by:
5.2 Rank of a Matrix. Set-up. Recall block multiplication:. Theorem 1. The following conditions are equivalent for an n x n matrix A: 1. The rows of A are linearly independent in n . 2. The rows of A span n . 3. The columns of A are linearly independent in n .
Rank of a Matrix The rank of a matrix is defined as (a) The maximum number of linearly independent column vectors in the matrix OR (b) The maximum number of linearly independent row vectors in the matrix. Both definitions are equivalent. Rank of matrix Example: Consider the matrix: Hence, the rank is 3 Therefore, rank is not 4 !
Presentation on theme: "Matrices and Determinants"— Presentation transcript: ... 51 Steps to Find Rank of a Matrix The given matrix should be a square matrix. If it is not so, the matrix should be made a square matrix by deleting the extra row or the column. ... Download ppt "Matrices and Determinants" Similar presentations . Elementary ...
The Rank of a Matrix.pptx - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Scribd is the world's largest social reading and publishing site.
non-zero minor. The order of that minor is the rank of A. This method usually involves a lot of computational work since we have to evaluate several determinan Method Il : Reduce the matrix to the upper triangular form of the matrix by elementary row transformatior then number of non-zero rows of triangular matrix is equal to rank of the matrix.
Finding Rank of a Matrix - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Scribd is the world's largest social reading and publishing site.
Presentation Transcript. Matrices and Determinants. Matrices • A matrix is a rectangular arrangement of numbers in rows and columns. Rows run horizontally and columns run vertically. • The dimensions of a matrix are stated "m x n" where 'm' is the number of rows and 'n' is the number of columns.
Rank of a Matrix - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Scribd is the world's largest social reading and publishing site.
Linear Algebra with Sage (BigBook, Free e-book, English Version) Sang-Gu Lee. This book, 'Linear Algebra with Sage', has two goals. The first goal is to explain Linear Algebra with the help of Sage. Sage is one of the most popular computer algebra system (CAS). Sage is a free and user-friendly software.
1.1 Matrices Consider the following set of equations: It is easy to show that x = 3 and 3x-y=5e x+y-2z=7, 2x-y-4z = 2, How about solving —5x + 4 Y' 10 z = 1, 3x—y—6z = 5. Matrices can help... 4. 1.1 Matrices In the matrix 21 ml 12 22 In 2n mn •numbers q. are called elements. First subscript indicates the row; second subscript indicates ...
matrix and hence find the Rank of the matrix. Q. 2: Find the Normal form of the given matrix and hence find the Rank of the matrix. Q. 2: Reduce the given matrix to Normal Form: Normal Form-PAQ. Q. 1 Find the non-singular matrices P and Q such that PAQ is in normal and hence find the rank of A. THANKS !! (23) 35'/ Rank 3 102
Chapter 12 - Matrices. A matrix is a rectangular arrangement of numbers into rows and columns. 4 -2 9 0 3 -5 A Matrix This is a 2 by 3 Matrix. 2 Rows and 3 Columns 4 -2 9 0 3 -5 A Matrix. Matrix - a rectangular array of variables or numbers in horizontal rows and vertical columns enclosed in brackets. • Element - each value in a matrix ...
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