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3) Consider the following matrix: [2 sin² a 2 cos² a 1] A = 2 sin? ß 2cos² ß 1 [2 sin² y 2cos²y 1] Answer the following questions: 3.1) Without using cofactor expansions, find det(A). 3.2) What can we say about the reduced row-echelon form of A?

3) Consider the following matrix: [2 sin² a 2 cos² a 1] A = 2 sin? ß 2cos² ß 1 [2 sin² y 2cos²y 1] Answer the following questions: 3.1) Without using cofactor expansions, find det(A). 3.2) What can we say about the reduced row-echelon form of A?

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.8: Determinants
Problem 2E
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3) Consider the following matrix: [2 sin² a 2 cos? a 1] A = 2 sin? B 2 cos² 3 1 |2 sin? y 2 cos?y 1 Answer the following questions: 3.1) Without using cofactor expansions, find det(A). 3.2) What can we say about the reduced row-echelon form of A?
Transcribed Image Text:3) Consider the following matrix: [2 sin² a 2 cos? a 1] A = 2 sin? B 2 cos² 3 1 |2 sin? y 2 cos?y 1 Answer the following questions: 3.1) Without using cofactor expansions, find det(A). 3.2) What can we say about the reduced row-echelon form of A?
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