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TRUE OR FALSE If A and B are orthogonal 2x2 matrices, then AB = BA

Linear Algebra with Applications | 4th Edition | ISBN: 9780136009269 | Authors: Otto Bretscher ISBN: 9780136009269 434

Solution for problem 21 Chapter 5

Linear Algebra with Applications | 4th Edition

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Linear Algebra with Applications | 4th Edition | ISBN: 9780136009269 | Authors: Otto Bretscher

Linear Algebra with Applications | 4th Edition

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Problem 21

TRUE OR FALSE? If A and B are orthogonal 2x2 matrices, then AB = BA.

Step-by-Step Solution:
Step 1 of 3

Funtulis­ MATH 105 Special Products – 2/8/16 Perfect Square Trinomials: (A + B) = A + 2AB + B 2 2 2 2 (A ­ B) = A ­ 2AB + B 2 2 Ex. Keeping the above formats in mind, factor 9x + 30xy + 25y . (3x + 5y) 2 Difference of Cubes: 3 3 2 2 (A + B ) = (A + B) (A ­ AB + B ) 3 3 2 2 (A ­ B ) = (A – B) (A + AB + B ) Factor: 3 3 3 2 2 2 27 – r → (3) – (r) → (3 – r) (3 + 3r + r ) → (3 – r) (9 + 3r + r ) 9 12 3 3 4 3

Step 2 of 3

Chapter 5, Problem 21 is Solved
Step 3 of 3

Textbook: Linear Algebra with Applications
Edition: 4
Author: Otto Bretscher
ISBN: 9780136009269

This full solution covers the following key subjects: . This expansive textbook survival guide covers 41 chapters, and 2394 solutions. The answer to “TRUE OR FALSE? If A and B are orthogonal 2x2 matrices, then AB = BA.” is broken down into a number of easy to follow steps, and 15 words. Linear Algebra with Applications was written by and is associated to the ISBN: 9780136009269. The full step-by-step solution to problem: 21 from chapter: 5 was answered by , our top Math solution expert on 03/15/18, 05:20PM. This textbook survival guide was created for the textbook: Linear Algebra with Applications, edition: 4. Since the solution to 21 from 5 chapter was answered, more than 229 students have viewed the full step-by-step answer.

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TRUE OR FALSE If A and B are orthogonal 2x2 matrices, then AB = BA