WEx2 - I . What is the signi±cance of this result in terms...

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Chapter 2 Section 1 Qn 11. Let A and B be 2 ± 2 matrices. (a) Does det( A + B ) = det A + det B ? (b) Does det( AB ) = (det A )(det B )? (c) Does det( AB ) = det( BA )? Justify your answer . 1
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Chapter 2 Section 2 Qn 15. Let A and B be n ± n matrices. Prove that if AB = I , then BA =
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Unformatted text preview: I . What is the signi±cance of this result in terms of the de±nition of a nonsingular matrix? 1 Chapter 2 Section 3 Qn 6. If A is singular, what can you say about the product A adj A ? 1...
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WEx2 - I . What is the signi±cance of this result in terms...

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