a. Use the result in Exercise 9 to show that if A1 exists and x, y
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b. By multiplying on the right by A + xyt, show that when ytAˆ’1 x = ˆ’1 we have
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A-lxy'A- 1+y'A-x (A + xy')- = A--
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a b Since A exists we can write det A xy det A AAxyt det AI Axy det A det...View the full answer
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