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If A = [(1, 0, 0), (0, 1, 1), (0, -2, 4)], 6A^-1 = A^2 + cA + dI, then (c, d) is

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If A = [(1, 0, 0), (0, 1, 1), (0, -2, 4)], 6A-1 = A2 + cA + dI, then (c, d) is

(a) (-6, 11)

(b) (- 11, 6)

(c) (11, 6)

(d) (6, 11)

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The correct option (a)  (-6, 11)

Explanation:

Every square matrix satisfied its characteristic equation

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