Problem 2 Let A and B be 3 x 3-matrices, with det(A) = -2 and det(B) = 3. (1) Is A invertible? (justify your answer) (2) Is B invertible? (justify your answer) (3) Use properties of determinants to compute: (a) det(AB) (b) det (5A) (c) det(A-1) (d) det(AB-1) (e) det(A3) -17--1

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Linear algebra! Please solve first 2 part correctly and handwritten
Problem 2 Let A and B be 3 x 3-matrices, with det(A) = -2 and det(B) = 3.
(1) Is A invertible? (justify your answer)
(2) Is B invertible? (justify your answer)
(3) Use properties of determinants to compute:
(a) det(AB)
(b) det (5A)
(c) det(A-1)
(d) det(AB-1)
(e) det(A3)
-17--1
Transcribed Image Text:Problem 2 Let A and B be 3 x 3-matrices, with det(A) = -2 and det(B) = 3. (1) Is A invertible? (justify your answer) (2) Is B invertible? (justify your answer) (3) Use properties of determinants to compute: (a) det(AB) (b) det (5A) (c) det(A-1) (d) det(AB-1) (e) det(A3) -17--1
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