Find (AB)-1, (3A)-1, and (A*)-' given that 1 2 5 3 -3 4 A-1 = 3 1 6. B-1 = 1 3 2 8 1 6. 1

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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Find (AB)-1, (3A)-1, and (A*)-1 given that
|
1 2 5
3 -3 4
A-1
B-1
1 3
6 1
3 1 6
2 8 1
7
Transcribed Image Text:Find (AB)-1, (3A)-1, and (A*)-1 given that | 1 2 5 3 -3 4 A-1 B-1 1 3 6 1 3 1 6 2 8 1 7
Expert Solution
Step 1

Recall:

  • AB-1 = B-1A-1
  • aA-1 =aA-1 ; where 'a' is any scalar.
  • At-1 =A-1t
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