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Could you explain the problem? (15 points). Suppose A is a (4 x 4) matrix. (a) If det A = 1, then what is det

Could you explain the problem?

(15 points). Suppose A is a (4 x 4) matrix. (a) If det A = 1, then what is det (2A)? det (2A) = (b) If the characteristic polynomial of A is p()) = () + 1)2(1 - 1)2, then what is the characteristic polynomial of 2A

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