Question: 2 4 Let A = 1 2 1 4 0 a) Compute detA by using elementary row/column operations to reduce the matrix to an upper

2 4 Let A = 1 2 1 4 0 a) Compute detA by using elementary row/column operations to reduce the matrix to an upper triangular form. b) Let B be a 3 x 3 invertible matrix such that detB = 2. Compute det (4BA-1)

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