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pls. answer 5 and 6

pls. answer 5 and 6

Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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pls. answer 5 and 6

4. In the matrix equation MAT = H, M and T are square matrices. If H is a 2-by-3 matrix, what is the size of matrix A? (a) 3-by-2 (b) 3-by-3 (c) 2-by-3 (d) 2-by-2 1 (1 Which of the following equals A4? 1 5. Consider the matrix A V2 -1 (a) -1) -1) 1 (Ь) V2 1 (c) 1 (d) 2-1 -1 -1 -1 6. Let A and B be n-by-n matrices. Which of the following conditions is sufficient to conclude that АВ — ВА? (a) A+ B = B+A. (b) (АB)? — АР В?. (с) А? — В? — (А + B)(А — В). (d) (A+ B)² = A² + B². |3D
Transcribed Image Text:4. In the matrix equation MAT = H, M and T are square matrices. If H is a 2-by-3 matrix, what is the size of matrix A? (a) 3-by-2 (b) 3-by-3 (c) 2-by-3 (d) 2-by-2 1 (1 Which of the following equals A4? 1 5. Consider the matrix A V2 -1 (a) -1) -1) 1 (Ь) V2 1 (c) 1 (d) 2-1 -1 -1 -1 6. Let A and B be n-by-n matrices. Which of the following conditions is sufficient to conclude that АВ — ВА? (a) A+ B = B+A. (b) (АB)? — АР В?. (с) А? — В? — (А + B)(А — В). (d) (A+ B)² = A² + B². |3D
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