Let A be a 4 !! 4 matrix and det (A) = -3 . Find det (A^{-1}) = det (2A) = det (A^{t}) = det (A^3) =
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det(A-I): We know that det(A) = -3, but we need to find the determinant of (A-I). Since we don't have the actual matrix, we can't compute this directly. So, we can't find det(A-I) without more information. Show more…
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