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If A = ((2, 2), (9, 4)) and I = ((1, 0), (0, 1)), then 10A^-1 is equal to (1) 4I - A (2) A - 6I

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in Mathematics by (52.6k points)

If A = ((2, 2), (9, 4)) and I = ((1, 0), (0, 1)), then 10A-1 is equal to

(1) 4I - A

(2) A - 6I

(3) 6I - A

(4) A - 4I

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2 Answers

+2 votes
by (58.4k points)
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Best answer

Answer is (2) A - 6I

10A–1 = ?

According to Cayley Hamilton equation

+1 vote
by (54.9k points)

Answer is (2) A – 6I

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